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fs/f2fs/compress.c
38.2 KB
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// SPDX-License-Identifier: GPL-2.0 /* * f2fs compress support * * Copyright (c) 2019 Chao Yu <chao@kernel.org> */ #include <linux/fs.h> #include <linux/f2fs_fs.h> #include <linux/writeback.h> #include <linux/backing-dev.h> #include <linux/lzo.h> #include <linux/lz4.h> |
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#include <linux/zstd.h> |
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#include "f2fs.h" #include "node.h" #include <trace/events/f2fs.h> |
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static struct kmem_cache *cic_entry_slab; static struct kmem_cache *dic_entry_slab; |
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static void *page_array_alloc(struct inode *inode, int nr) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); unsigned int size = sizeof(struct page *) * nr; if (likely(size <= sbi->page_array_slab_size)) return kmem_cache_zalloc(sbi->page_array_slab, GFP_NOFS); return f2fs_kzalloc(sbi, size, GFP_NOFS); } static void page_array_free(struct inode *inode, void *pages, int nr) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); unsigned int size = sizeof(struct page *) * nr; if (!pages) return; if (likely(size <= sbi->page_array_slab_size)) kmem_cache_free(sbi->page_array_slab, pages); else kfree(pages); } |
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struct f2fs_compress_ops { int (*init_compress_ctx)(struct compress_ctx *cc); void (*destroy_compress_ctx)(struct compress_ctx *cc); int (*compress_pages)(struct compress_ctx *cc); |
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int (*init_decompress_ctx)(struct decompress_io_ctx *dic); void (*destroy_decompress_ctx)(struct decompress_io_ctx *dic); |
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int (*decompress_pages)(struct decompress_io_ctx *dic); }; static unsigned int offset_in_cluster(struct compress_ctx *cc, pgoff_t index) { return index & (cc->cluster_size - 1); } static pgoff_t cluster_idx(struct compress_ctx *cc, pgoff_t index) { return index >> cc->log_cluster_size; } static pgoff_t start_idx_of_cluster(struct compress_ctx *cc) { return cc->cluster_idx << cc->log_cluster_size; } bool f2fs_is_compressed_page(struct page *page) { if (!PagePrivate(page)) return false; if (!page_private(page)) return false; if (IS_ATOMIC_WRITTEN_PAGE(page) || IS_DUMMY_WRITTEN_PAGE(page)) return false; |
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/* * page->private may be set with pid. * pid_max is enough to check if it is traced. */ if (IS_IO_TRACED_PAGE(page)) return false; |
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f2fs_bug_on(F2FS_M_SB(page->mapping), *((u32 *)page_private(page)) != F2FS_COMPRESSED_PAGE_MAGIC); return true; } static void f2fs_set_compressed_page(struct page *page, |
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struct inode *inode, pgoff_t index, void *data) |
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{ SetPagePrivate(page); set_page_private(page, (unsigned long)data); /* i_crypto_info and iv index */ page->index = index; page->mapping = inode->i_mapping; |
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} |
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static void f2fs_drop_rpages(struct compress_ctx *cc, int len, bool unlock) { int i; for (i = 0; i < len; i++) { if (!cc->rpages[i]) continue; if (unlock) unlock_page(cc->rpages[i]); else put_page(cc->rpages[i]); } } static void f2fs_put_rpages(struct compress_ctx *cc) { f2fs_drop_rpages(cc, cc->cluster_size, false); } static void f2fs_unlock_rpages(struct compress_ctx *cc, int len) { f2fs_drop_rpages(cc, len, true); } |
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static void f2fs_put_rpages_mapping(struct address_space *mapping, |
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pgoff_t start, int len) { int i; for (i = 0; i < len; i++) { struct page *page = find_get_page(mapping, start + i); put_page(page); put_page(page); } } static void f2fs_put_rpages_wbc(struct compress_ctx *cc, struct writeback_control *wbc, bool redirty, int unlock) { unsigned int i; for (i = 0; i < cc->cluster_size; i++) { if (!cc->rpages[i]) continue; if (redirty) redirty_page_for_writepage(wbc, cc->rpages[i]); f2fs_put_page(cc->rpages[i], unlock); } } struct page *f2fs_compress_control_page(struct page *page) { return ((struct compress_io_ctx *)page_private(page))->rpages[0]; } int f2fs_init_compress_ctx(struct compress_ctx *cc) { |
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if (cc->rpages) |
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return 0; |
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cc->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
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return cc->rpages ? 0 : -ENOMEM; } void f2fs_destroy_compress_ctx(struct compress_ctx *cc) { |
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page_array_free(cc->inode, cc->rpages, cc->cluster_size); |
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cc->rpages = NULL; cc->nr_rpages = 0; cc->nr_cpages = 0; cc->cluster_idx = NULL_CLUSTER; } void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page) { unsigned int cluster_ofs; if (!f2fs_cluster_can_merge_page(cc, page->index)) f2fs_bug_on(F2FS_I_SB(cc->inode), 1); cluster_ofs = offset_in_cluster(cc, page->index); cc->rpages[cluster_ofs] = page; cc->nr_rpages++; cc->cluster_idx = cluster_idx(cc, page->index); } #ifdef CONFIG_F2FS_FS_LZO static int lzo_init_compress_ctx(struct compress_ctx *cc) { cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), LZO1X_MEM_COMPRESS, GFP_NOFS); if (!cc->private) return -ENOMEM; cc->clen = lzo1x_worst_compress(PAGE_SIZE << cc->log_cluster_size); return 0; } static void lzo_destroy_compress_ctx(struct compress_ctx *cc) { kvfree(cc->private); cc->private = NULL; } static int lzo_compress_pages(struct compress_ctx *cc) { int ret; ret = lzo1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, &cc->clen, cc->private); if (ret != LZO_E_OK) { printk_ratelimited("%sF2FS-fs (%s): lzo compress failed, ret:%d ", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, ret); return -EIO; } return 0; } static int lzo_decompress_pages(struct decompress_io_ctx *dic) { int ret; ret = lzo1x_decompress_safe(dic->cbuf->cdata, dic->clen, dic->rbuf, &dic->rlen); if (ret != LZO_E_OK) { printk_ratelimited("%sF2FS-fs (%s): lzo decompress failed, ret:%d ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret); return -EIO; } if (dic->rlen != PAGE_SIZE << dic->log_cluster_size) { printk_ratelimited("%sF2FS-fs (%s): lzo invalid rlen:%zu, " "expected:%lu ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, dic->rlen, PAGE_SIZE << dic->log_cluster_size); return -EIO; } return 0; } static const struct f2fs_compress_ops f2fs_lzo_ops = { .init_compress_ctx = lzo_init_compress_ctx, .destroy_compress_ctx = lzo_destroy_compress_ctx, .compress_pages = lzo_compress_pages, .decompress_pages = lzo_decompress_pages, }; #endif #ifdef CONFIG_F2FS_FS_LZ4 static int lz4_init_compress_ctx(struct compress_ctx *cc) { cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), LZ4_MEM_COMPRESS, GFP_NOFS); if (!cc->private) return -ENOMEM; |
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/* * we do not change cc->clen to LZ4_compressBound(inputsize) to * adapt worst compress case, because lz4 compressor can handle * output budget properly. */ cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; |
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return 0; } static void lz4_destroy_compress_ctx(struct compress_ctx *cc) { kvfree(cc->private); cc->private = NULL; } static int lz4_compress_pages(struct compress_ctx *cc) { int len; len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen, cc->clen, cc->private); |
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if (!len) return -EAGAIN; |
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cc->clen = len; return 0; } static int lz4_decompress_pages(struct decompress_io_ctx *dic) { int ret; ret = LZ4_decompress_safe(dic->cbuf->cdata, dic->rbuf, dic->clen, dic->rlen); if (ret < 0) { printk_ratelimited("%sF2FS-fs (%s): lz4 decompress failed, ret:%d ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, ret); return -EIO; } if (ret != PAGE_SIZE << dic->log_cluster_size) { printk_ratelimited("%sF2FS-fs (%s): lz4 invalid rlen:%zu, " "expected:%lu ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, dic->rlen, PAGE_SIZE << dic->log_cluster_size); return -EIO; } return 0; } static const struct f2fs_compress_ops f2fs_lz4_ops = { .init_compress_ctx = lz4_init_compress_ctx, .destroy_compress_ctx = lz4_destroy_compress_ctx, .compress_pages = lz4_compress_pages, .decompress_pages = lz4_decompress_pages, }; #endif |
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#ifdef CONFIG_F2FS_FS_ZSTD #define F2FS_ZSTD_DEFAULT_CLEVEL 1 static int zstd_init_compress_ctx(struct compress_ctx *cc) { ZSTD_parameters params; ZSTD_CStream *stream; void *workspace; unsigned int workspace_size; params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, cc->rlen, 0); workspace_size = ZSTD_CStreamWorkspaceBound(params.cParams); workspace = f2fs_kvmalloc(F2FS_I_SB(cc->inode), workspace_size, GFP_NOFS); if (!workspace) return -ENOMEM; stream = ZSTD_initCStream(params, 0, workspace, workspace_size); if (!stream) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initCStream failed ", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, __func__); kvfree(workspace); return -EIO; } cc->private = workspace; cc->private2 = stream; cc->clen = cc->rlen - PAGE_SIZE - COMPRESS_HEADER_SIZE; return 0; } static void zstd_destroy_compress_ctx(struct compress_ctx *cc) { kvfree(cc->private); cc->private = NULL; cc->private2 = NULL; } static int zstd_compress_pages(struct compress_ctx *cc) { ZSTD_CStream *stream = cc->private2; ZSTD_inBuffer inbuf; ZSTD_outBuffer outbuf; int src_size = cc->rlen; int dst_size = src_size - PAGE_SIZE - COMPRESS_HEADER_SIZE; int ret; inbuf.pos = 0; inbuf.src = cc->rbuf; inbuf.size = src_size; outbuf.pos = 0; outbuf.dst = cc->cbuf->cdata; outbuf.size = dst_size; ret = ZSTD_compressStream(stream, &outbuf, &inbuf); if (ZSTD_isError(ret)) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d ", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, __func__, ZSTD_getErrorCode(ret)); return -EIO; } ret = ZSTD_endStream(stream, &outbuf); if (ZSTD_isError(ret)) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_endStream returned %d ", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, __func__, ZSTD_getErrorCode(ret)); return -EIO; } |
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/* * there is compressed data remained in intermediate buffer due to * no more space in cbuf.cdata */ if (ret) return -EAGAIN; |
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cc->clen = outbuf.pos; return 0; } static int zstd_init_decompress_ctx(struct decompress_io_ctx *dic) { ZSTD_DStream *stream; void *workspace; unsigned int workspace_size; |
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unsigned int max_window_size = MAX_COMPRESS_WINDOW_SIZE(dic->log_cluster_size); |
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workspace_size = ZSTD_DStreamWorkspaceBound(max_window_size); |
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workspace = f2fs_kvmalloc(F2FS_I_SB(dic->inode), workspace_size, GFP_NOFS); if (!workspace) return -ENOMEM; |
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stream = ZSTD_initDStream(max_window_size, workspace, workspace_size); |
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if (!stream) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_initDStream failed ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, __func__); kvfree(workspace); return -EIO; } dic->private = workspace; dic->private2 = stream; return 0; } static void zstd_destroy_decompress_ctx(struct decompress_io_ctx *dic) { kvfree(dic->private); dic->private = NULL; dic->private2 = NULL; } static int zstd_decompress_pages(struct decompress_io_ctx *dic) { ZSTD_DStream *stream = dic->private2; ZSTD_inBuffer inbuf; ZSTD_outBuffer outbuf; int ret; inbuf.pos = 0; inbuf.src = dic->cbuf->cdata; inbuf.size = dic->clen; outbuf.pos = 0; outbuf.dst = dic->rbuf; outbuf.size = dic->rlen; ret = ZSTD_decompressStream(stream, &outbuf, &inbuf); if (ZSTD_isError(ret)) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD_compressStream failed, ret: %d ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, __func__, ZSTD_getErrorCode(ret)); return -EIO; } if (dic->rlen != outbuf.pos) { printk_ratelimited("%sF2FS-fs (%s): %s ZSTD invalid rlen:%zu, " "expected:%lu ", KERN_ERR, F2FS_I_SB(dic->inode)->sb->s_id, __func__, dic->rlen, PAGE_SIZE << dic->log_cluster_size); return -EIO; } return 0; } static const struct f2fs_compress_ops f2fs_zstd_ops = { .init_compress_ctx = zstd_init_compress_ctx, .destroy_compress_ctx = zstd_destroy_compress_ctx, .compress_pages = zstd_compress_pages, .init_decompress_ctx = zstd_init_decompress_ctx, .destroy_decompress_ctx = zstd_destroy_decompress_ctx, .decompress_pages = zstd_decompress_pages, }; #endif |
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#ifdef CONFIG_F2FS_FS_LZO #ifdef CONFIG_F2FS_FS_LZORLE static int lzorle_compress_pages(struct compress_ctx *cc) { int ret; ret = lzorle1x_1_compress(cc->rbuf, cc->rlen, cc->cbuf->cdata, &cc->clen, cc->private); if (ret != LZO_E_OK) { printk_ratelimited("%sF2FS-fs (%s): lzo-rle compress failed, ret:%d ", KERN_ERR, F2FS_I_SB(cc->inode)->sb->s_id, ret); return -EIO; } return 0; } static const struct f2fs_compress_ops f2fs_lzorle_ops = { .init_compress_ctx = lzo_init_compress_ctx, .destroy_compress_ctx = lzo_destroy_compress_ctx, .compress_pages = lzorle_compress_pages, .decompress_pages = lzo_decompress_pages, }; #endif #endif |
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static const struct f2fs_compress_ops *f2fs_cops[COMPRESS_MAX] = { #ifdef CONFIG_F2FS_FS_LZO &f2fs_lzo_ops, #else NULL, #endif #ifdef CONFIG_F2FS_FS_LZ4 &f2fs_lz4_ops, #else NULL, #endif |
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#ifdef CONFIG_F2FS_FS_ZSTD &f2fs_zstd_ops, #else NULL, #endif |
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#if defined(CONFIG_F2FS_FS_LZO) && defined(CONFIG_F2FS_FS_LZORLE) &f2fs_lzorle_ops, #else NULL, #endif |
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}; bool f2fs_is_compress_backend_ready(struct inode *inode) { if (!f2fs_compressed_file(inode)) return true; return f2fs_cops[F2FS_I(inode)->i_compress_algorithm]; } |
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static mempool_t *compress_page_pool; |
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static int num_compress_pages = 512; module_param(num_compress_pages, uint, 0444); MODULE_PARM_DESC(num_compress_pages, "Number of intermediate compress pages to preallocate"); int f2fs_init_compress_mempool(void) { compress_page_pool = mempool_create_page_pool(num_compress_pages, 0); if (!compress_page_pool) return -ENOMEM; return 0; } void f2fs_destroy_compress_mempool(void) { mempool_destroy(compress_page_pool); } static struct page *f2fs_compress_alloc_page(void) |
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{ struct page *page; |
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page = mempool_alloc(compress_page_pool, GFP_NOFS); |
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lock_page(page); |
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return page; } |
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static void f2fs_compress_free_page(struct page *page) { if (!page) return; set_page_private(page, (unsigned long)NULL); ClearPagePrivate(page); page->mapping = NULL; unlock_page(page); mempool_free(page, compress_page_pool); } |
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#define MAX_VMAP_RETRIES 3 static void *f2fs_vmap(struct page **pages, unsigned int count) { int i; void *buf = NULL; for (i = 0; i < MAX_VMAP_RETRIES; i++) { buf = vm_map_ram(pages, count, -1); if (buf) break; vm_unmap_aliases(); } return buf; } |
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static int f2fs_compress_pages(struct compress_ctx *cc) { |
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struct f2fs_inode_info *fi = F2FS_I(cc->inode); const struct f2fs_compress_ops *cops = f2fs_cops[fi->i_compress_algorithm]; |
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unsigned int max_len, new_nr_cpages; struct page **new_cpages; |
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u32 chksum = 0; |
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int i, ret; trace_f2fs_compress_pages_start(cc->inode, cc->cluster_idx, cc->cluster_size, fi->i_compress_algorithm); |
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if (cops->init_compress_ctx) { ret = cops->init_compress_ctx(cc); if (ret) goto out; } |
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max_len = COMPRESS_HEADER_SIZE + cc->clen; cc->nr_cpages = DIV_ROUND_UP(max_len, PAGE_SIZE); |
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cc->cpages = page_array_alloc(cc->inode, cc->nr_cpages); |
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if (!cc->cpages) { ret = -ENOMEM; goto destroy_compress_ctx; } for (i = 0; i < cc->nr_cpages; i++) { |
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cc->cpages[i] = f2fs_compress_alloc_page(); |
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if (!cc->cpages[i]) { ret = -ENOMEM; goto out_free_cpages; } } |
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cc->rbuf = f2fs_vmap(cc->rpages, cc->cluster_size); |
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if (!cc->rbuf) { ret = -ENOMEM; goto out_free_cpages; } |
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cc->cbuf = f2fs_vmap(cc->cpages, cc->nr_cpages); |
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if (!cc->cbuf) { ret = -ENOMEM; goto out_vunmap_rbuf; } ret = cops->compress_pages(cc); if (ret) goto out_vunmap_cbuf; max_len = PAGE_SIZE * (cc->cluster_size - 1) - COMPRESS_HEADER_SIZE; if (cc->clen > max_len) { ret = -EAGAIN; goto out_vunmap_cbuf; } cc->cbuf->clen = cpu_to_le32(cc->clen); |
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if (fi->i_compress_flag & 1 << COMPRESS_CHKSUM) chksum = f2fs_crc32(F2FS_I_SB(cc->inode), cc->cbuf->cdata, cc->clen); cc->cbuf->chksum = cpu_to_le32(chksum); |
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for (i = 0; i < COMPRESS_DATA_RESERVED_SIZE; i++) cc->cbuf->reserved[i] = cpu_to_le32(0); |
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new_nr_cpages = DIV_ROUND_UP(cc->clen + COMPRESS_HEADER_SIZE, PAGE_SIZE); /* Now we're going to cut unnecessary tail pages */ new_cpages = page_array_alloc(cc->inode, new_nr_cpages); if (!new_cpages) { ret = -ENOMEM; goto out_vunmap_cbuf; } |
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/* zero out any unused part of the last page */ memset(&cc->cbuf->cdata[cc->clen], 0, |
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(new_nr_cpages * PAGE_SIZE) - (cc->clen + COMPRESS_HEADER_SIZE)); |
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vm_unmap_ram(cc->cbuf, cc->nr_cpages); vm_unmap_ram(cc->rbuf, cc->cluster_size); |
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for (i = 0; i < cc->nr_cpages; i++) { if (i < new_nr_cpages) { new_cpages[i] = cc->cpages[i]; continue; } |
5e6bbde95 f2fs: introduce m... |
675 |
f2fs_compress_free_page(cc->cpages[i]); |
4c8ff7095 f2fs: support dat... |
676 677 |
cc->cpages[i] = NULL; } |
23b1faaad f2fs: compress: a... |
678 679 |
if (cops->destroy_compress_ctx) cops->destroy_compress_ctx(cc); |
09ff48011 f2fs: compress: f... |
680 |
|
310830317 f2fs: compress: i... |
681 682 683 |
page_array_free(cc->inode, cc->cpages, cc->nr_cpages); cc->cpages = new_cpages; cc->nr_cpages = new_nr_cpages; |
4c8ff7095 f2fs: support dat... |
684 685 686 687 688 689 |
trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, cc->clen, ret); return 0; out_vunmap_cbuf: |
6fcaebac6 f2fs: change virt... |
690 |
vm_unmap_ram(cc->cbuf, cc->nr_cpages); |
4c8ff7095 f2fs: support dat... |
691 |
out_vunmap_rbuf: |
6fcaebac6 f2fs: change virt... |
692 |
vm_unmap_ram(cc->rbuf, cc->cluster_size); |
4c8ff7095 f2fs: support dat... |
693 694 695 |
out_free_cpages: for (i = 0; i < cc->nr_cpages; i++) { if (cc->cpages[i]) |
5e6bbde95 f2fs: introduce m... |
696 |
f2fs_compress_free_page(cc->cpages[i]); |
4c8ff7095 f2fs: support dat... |
697 |
} |
310830317 f2fs: compress: i... |
698 |
page_array_free(cc->inode, cc->cpages, cc->nr_cpages); |
4c8ff7095 f2fs: support dat... |
699 700 |
cc->cpages = NULL; destroy_compress_ctx: |
23b1faaad f2fs: compress: a... |
701 702 |
if (cops->destroy_compress_ctx) cops->destroy_compress_ctx(cc); |
4c8ff7095 f2fs: support dat... |
703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 |
out: trace_f2fs_compress_pages_end(cc->inode, cc->cluster_idx, cc->clen, ret); return ret; } void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity) { struct decompress_io_ctx *dic = (struct decompress_io_ctx *)page_private(page); struct f2fs_sb_info *sbi = F2FS_I_SB(dic->inode); struct f2fs_inode_info *fi= F2FS_I(dic->inode); const struct f2fs_compress_ops *cops = f2fs_cops[fi->i_compress_algorithm]; int ret; |
b2f57a8e6 f2fs: compress: d... |
718 |
int i; |
4c8ff7095 f2fs: support dat... |
719 720 721 722 723 |
dec_page_count(sbi, F2FS_RD_DATA); if (bio->bi_status || PageError(page)) dic->failed = true; |
e6c3948de f2fs: compress: u... |
724 |
if (atomic_dec_return(&dic->pending_pages)) |
4c8ff7095 f2fs: support dat... |
725 726 727 728 729 730 731 732 733 734 |
return; trace_f2fs_decompress_pages_start(dic->inode, dic->cluster_idx, dic->cluster_size, fi->i_compress_algorithm); /* submit partial compressed pages */ if (dic->failed) { ret = -EIO; goto out_free_dic; } |
310830317 f2fs: compress: i... |
735 |
dic->tpages = page_array_alloc(dic->inode, dic->cluster_size); |
b2f57a8e6 f2fs: compress: d... |
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 |
if (!dic->tpages) { ret = -ENOMEM; goto out_free_dic; } for (i = 0; i < dic->cluster_size; i++) { if (dic->rpages[i]) { dic->tpages[i] = dic->rpages[i]; continue; } dic->tpages[i] = f2fs_compress_alloc_page(); if (!dic->tpages[i]) { ret = -ENOMEM; goto out_free_dic; } } |
23b1faaad f2fs: compress: a... |
753 754 755 756 757 |
if (cops->init_decompress_ctx) { ret = cops->init_decompress_ctx(dic); if (ret) goto out_free_dic; } |
6fcaebac6 f2fs: change virt... |
758 |
dic->rbuf = f2fs_vmap(dic->tpages, dic->cluster_size); |
4c8ff7095 f2fs: support dat... |
759 760 |
if (!dic->rbuf) { ret = -ENOMEM; |
23b1faaad f2fs: compress: a... |
761 |
goto destroy_decompress_ctx; |
4c8ff7095 f2fs: support dat... |
762 |
} |
6fcaebac6 f2fs: change virt... |
763 |
dic->cbuf = f2fs_vmap(dic->cpages, dic->nr_cpages); |
4c8ff7095 f2fs: support dat... |
764 765 766 767 768 769 770 771 772 773 774 775 776 777 |
if (!dic->cbuf) { ret = -ENOMEM; goto out_vunmap_rbuf; } dic->clen = le32_to_cpu(dic->cbuf->clen); dic->rlen = PAGE_SIZE << dic->log_cluster_size; if (dic->clen > PAGE_SIZE * dic->nr_cpages - COMPRESS_HEADER_SIZE) { ret = -EFSCORRUPTED; goto out_vunmap_cbuf; } ret = cops->decompress_pages(dic); |
3ed3a9407 f2fs: compress: f... |
778 |
if (!ret && (fi->i_compress_flag & 1 << COMPRESS_CHKSUM)) { |
1f004d62f f2fs: compress: s... |
779 780 781 782 783 784 785 786 787 788 789 790 |
u32 provided = le32_to_cpu(dic->cbuf->chksum); u32 calculated = f2fs_crc32(sbi, dic->cbuf->cdata, dic->clen); if (provided != calculated) { if (!is_inode_flag_set(dic->inode, FI_COMPRESS_CORRUPT)) { set_inode_flag(dic->inode, FI_COMPRESS_CORRUPT); printk_ratelimited( "%sF2FS-fs (%s): checksum invalid, nid = %lu, %x vs %x", KERN_INFO, sbi->sb->s_id, dic->inode->i_ino, provided, calculated); } set_sbi_flag(sbi, SBI_NEED_FSCK); |
1f004d62f f2fs: compress: s... |
791 792 |
} } |
4c8ff7095 f2fs: support dat... |
793 |
out_vunmap_cbuf: |
6fcaebac6 f2fs: change virt... |
794 |
vm_unmap_ram(dic->cbuf, dic->nr_cpages); |
4c8ff7095 f2fs: support dat... |
795 |
out_vunmap_rbuf: |
6fcaebac6 f2fs: change virt... |
796 |
vm_unmap_ram(dic->rbuf, dic->cluster_size); |
23b1faaad f2fs: compress: a... |
797 798 799 |
destroy_decompress_ctx: if (cops->destroy_decompress_ctx) cops->destroy_decompress_ctx(dic); |
4c8ff7095 f2fs: support dat... |
800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 |
out_free_dic: if (!verity) f2fs_decompress_end_io(dic->rpages, dic->cluster_size, ret, false); trace_f2fs_decompress_pages_end(dic->inode, dic->cluster_idx, dic->clen, ret); if (!verity) f2fs_free_dic(dic); } static bool is_page_in_cluster(struct compress_ctx *cc, pgoff_t index) { if (cc->cluster_idx == NULL_CLUSTER) return true; return cc->cluster_idx == cluster_idx(cc, index); } bool f2fs_cluster_is_empty(struct compress_ctx *cc) { return cc->nr_rpages == 0; } static bool f2fs_cluster_is_full(struct compress_ctx *cc) { return cc->cluster_size == cc->nr_rpages; } bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index) { if (f2fs_cluster_is_empty(cc)) return true; return is_page_in_cluster(cc, index); } static bool __cluster_may_compress(struct compress_ctx *cc) { struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); loff_t i_size = i_size_read(cc->inode); unsigned nr_pages = DIV_ROUND_UP(i_size, PAGE_SIZE); int i; for (i = 0; i < cc->cluster_size; i++) { struct page *page = cc->rpages[i]; f2fs_bug_on(sbi, !page); if (unlikely(f2fs_cp_error(sbi))) return false; if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) return false; /* beyond EOF */ if (page->index >= nr_pages) return false; } return true; } |
1a67cbe14 f2fs: fix to acco... |
858 |
static int __f2fs_cluster_blocks(struct compress_ctx *cc, bool compr) |
4c8ff7095 f2fs: support dat... |
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 |
{ struct dnode_of_data dn; int ret; set_new_dnode(&dn, cc->inode, NULL, NULL, 0); ret = f2fs_get_dnode_of_data(&dn, start_idx_of_cluster(cc), LOOKUP_NODE); if (ret) { if (ret == -ENOENT) ret = 0; goto fail; } if (dn.data_blkaddr == COMPRESS_ADDR) { int i; ret = 1; for (i = 1; i < cc->cluster_size; i++) { block_t blkaddr; |
a2ced1ce1 f2fs: clean up co... |
878 |
blkaddr = data_blkaddr(dn.inode, |
4c8ff7095 f2fs: support dat... |
879 |
dn.node_page, dn.ofs_in_node + i); |
1a67cbe14 f2fs: fix to acco... |
880 881 882 883 884 885 886 |
if (compr) { if (__is_valid_data_blkaddr(blkaddr)) ret++; } else { if (blkaddr != NULL_ADDR) ret++; } |
4c8ff7095 f2fs: support dat... |
887 888 889 890 891 892 |
} } fail: f2fs_put_dnode(&dn); return ret; } |
1a67cbe14 f2fs: fix to acco... |
893 894 895 896 897 898 899 |
/* return # of compressed blocks in compressed cluster */ static int f2fs_compressed_blocks(struct compress_ctx *cc) { return __f2fs_cluster_blocks(cc, true); } /* return # of valid blocks in compressed cluster */ |
d078319d0 f2fs: remove the ... |
900 |
static int f2fs_cluster_blocks(struct compress_ctx *cc) |
1a67cbe14 f2fs: fix to acco... |
901 902 903 |
{ return __f2fs_cluster_blocks(cc, false); } |
4c8ff7095 f2fs: support dat... |
904 905 906 907 908 909 910 911 |
int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index) { struct compress_ctx cc = { .inode = inode, .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, .cluster_size = F2FS_I(inode)->i_cluster_size, .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, }; |
d078319d0 f2fs: remove the ... |
912 |
return f2fs_cluster_blocks(&cc); |
4c8ff7095 f2fs: support dat... |
913 914 915 916 |
} static bool cluster_may_compress(struct compress_ctx *cc) { |
f15a200ae f2fs: add compres... |
917 |
if (!f2fs_need_compress_data(cc->inode)) |
4c8ff7095 f2fs: support dat... |
918 919 920 921 922 923 924 |
return false; if (f2fs_is_atomic_file(cc->inode)) return false; if (f2fs_is_mmap_file(cc->inode)) return false; if (!f2fs_cluster_is_full(cc)) return false; |
dc35d73a4 f2fs: compress: d... |
925 926 |
if (unlikely(f2fs_cp_error(F2FS_I_SB(cc->inode)))) return false; |
4c8ff7095 f2fs: support dat... |
927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 |
return __cluster_may_compress(cc); } static void set_cluster_writeback(struct compress_ctx *cc) { int i; for (i = 0; i < cc->cluster_size; i++) { if (cc->rpages[i]) set_page_writeback(cc->rpages[i]); } } static void set_cluster_dirty(struct compress_ctx *cc) { int i; for (i = 0; i < cc->cluster_size; i++) if (cc->rpages[i]) set_page_dirty(cc->rpages[i]); } static int prepare_compress_overwrite(struct compress_ctx *cc, struct page **pagep, pgoff_t index, void **fsdata) { struct f2fs_sb_info *sbi = F2FS_I_SB(cc->inode); struct address_space *mapping = cc->inode->i_mapping; struct page *page; struct dnode_of_data dn; sector_t last_block_in_bio; unsigned fgp_flag = FGP_LOCK | FGP_WRITE | FGP_CREAT; pgoff_t start_idx = start_idx_of_cluster(cc); int i, ret; bool prealloc; retry: |
d078319d0 f2fs: remove the ... |
963 |
ret = f2fs_cluster_blocks(cc); |
4c8ff7095 f2fs: support dat... |
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 |
if (ret <= 0) return ret; /* compressed case */ prealloc = (ret < cc->cluster_size); ret = f2fs_init_compress_ctx(cc); if (ret) return ret; /* keep page reference to avoid page reclaim */ for (i = 0; i < cc->cluster_size; i++) { page = f2fs_pagecache_get_page(mapping, start_idx + i, fgp_flag, GFP_NOFS); if (!page) { ret = -ENOMEM; goto unlock_pages; } if (PageUptodate(page)) unlock_page(page); else f2fs_compress_ctx_add_page(cc, page); } if (!f2fs_cluster_is_empty(cc)) { struct bio *bio = NULL; ret = f2fs_read_multi_pages(cc, &bio, cc->cluster_size, |
0683728ad f2fs: fix to avoi... |
993 |
&last_block_in_bio, false, true); |
4c8ff7095 f2fs: support dat... |
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 |
f2fs_destroy_compress_ctx(cc); if (ret) goto release_pages; if (bio) f2fs_submit_bio(sbi, bio, DATA); ret = f2fs_init_compress_ctx(cc); if (ret) goto release_pages; } for (i = 0; i < cc->cluster_size; i++) { f2fs_bug_on(sbi, cc->rpages[i]); page = find_lock_page(mapping, start_idx + i); f2fs_bug_on(sbi, !page); f2fs_wait_on_page_writeback(page, DATA, true, true); f2fs_compress_ctx_add_page(cc, page); f2fs_put_page(page, 0); if (!PageUptodate(page)) { f2fs_unlock_rpages(cc, i + 1); |
bc67c5d0c f2fs: remove unus... |
1018 |
f2fs_put_rpages_mapping(mapping, start_idx, |
4c8ff7095 f2fs: support dat... |
1019 1020 1021 1022 1023 1024 1025 |
cc->cluster_size); f2fs_destroy_compress_ctx(cc); goto retry; } } if (prealloc) { |
0ef818335 f2fs: add prefix ... |
1026 |
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); |
4c8ff7095 f2fs: support dat... |
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 |
set_new_dnode(&dn, cc->inode, NULL, NULL, 0); for (i = cc->cluster_size - 1; i > 0; i--) { ret = f2fs_get_block(&dn, start_idx + i); if (ret) { i = cc->cluster_size; break; } if (dn.data_blkaddr != NEW_ADDR) break; } |
0ef818335 f2fs: add prefix ... |
1040 |
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); |
4c8ff7095 f2fs: support dat... |
1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 |
} if (likely(!ret)) { *fsdata = cc->rpages; *pagep = cc->rpages[offset_in_cluster(cc, index)]; return cc->cluster_size; } unlock_pages: f2fs_unlock_rpages(cc, i); release_pages: |
bc67c5d0c f2fs: remove unus... |
1052 |
f2fs_put_rpages_mapping(mapping, start_idx, i); |
4c8ff7095 f2fs: support dat... |
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 |
f2fs_destroy_compress_ctx(cc); return ret; } int f2fs_prepare_compress_overwrite(struct inode *inode, struct page **pagep, pgoff_t index, void **fsdata) { struct compress_ctx cc = { .inode = inode, .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, .cluster_size = F2FS_I(inode)->i_cluster_size, .cluster_idx = index >> F2FS_I(inode)->i_log_cluster_size, .rpages = NULL, .nr_rpages = 0, }; return prepare_compress_overwrite(&cc, pagep, index, fsdata); } bool f2fs_compress_write_end(struct inode *inode, void *fsdata, pgoff_t index, unsigned copied) { struct compress_ctx cc = { |
310830317 f2fs: compress: i... |
1077 |
.inode = inode, |
4c8ff7095 f2fs: support dat... |
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 |
.log_cluster_size = F2FS_I(inode)->i_log_cluster_size, .cluster_size = F2FS_I(inode)->i_cluster_size, .rpages = fsdata, }; bool first_index = (index == cc.rpages[0]->index); if (copied) set_cluster_dirty(&cc); f2fs_put_rpages_wbc(&cc, NULL, false, 1); f2fs_destroy_compress_ctx(&cc); return first_index; } |
3265d3db1 f2fs: support par... |
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 |
int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock) { void *fsdata = NULL; struct page *pagep; int log_cluster_size = F2FS_I(inode)->i_log_cluster_size; pgoff_t start_idx = from >> (PAGE_SHIFT + log_cluster_size) << log_cluster_size; int err; err = f2fs_is_compressed_cluster(inode, start_idx); if (err < 0) return err; /* truncate normal cluster */ if (!err) return f2fs_do_truncate_blocks(inode, from, lock); /* truncate compressed cluster */ err = f2fs_prepare_compress_overwrite(inode, &pagep, start_idx, &fsdata); /* should not be a normal cluster */ f2fs_bug_on(F2FS_I_SB(inode), err == 0); if (err <= 0) return err; if (err > 0) { struct page **rpages = fsdata; int cluster_size = F2FS_I(inode)->i_cluster_size; int i; for (i = cluster_size - 1; i >= 0; i--) { loff_t start = rpages[i]->index << PAGE_SHIFT; if (from <= start) { zero_user_segment(rpages[i], 0, PAGE_SIZE); } else { zero_user_segment(rpages[i], from - start, PAGE_SIZE); break; } } f2fs_compress_write_end(inode, fsdata, start_idx, true); } return 0; } |
4c8ff7095 f2fs: support dat... |
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 |
static int f2fs_write_compressed_pages(struct compress_ctx *cc, int *submitted, struct writeback_control *wbc, enum iostat_type io_type) { struct inode *inode = cc->inode; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_io_info fio = { .sbi = sbi, .ino = cc->inode->i_ino, .type = DATA, .op = REQ_OP_WRITE, .op_flags = wbc_to_write_flags(wbc), .old_blkaddr = NEW_ADDR, .page = NULL, .encrypted_page = NULL, .compressed_page = NULL, .submitted = false, |
4c8ff7095 f2fs: support dat... |
1159 1160 |
.io_type = io_type, .io_wbc = wbc, |
27aacd28e f2fs: add inline ... |
1161 |
.encrypted = fscrypt_inode_uses_fs_layer_crypto(cc->inode), |
4c8ff7095 f2fs: support dat... |
1162 1163 1164 1165 1166 1167 1168 1169 |
}; struct dnode_of_data dn; struct node_info ni; struct compress_io_ctx *cic; pgoff_t start_idx = start_idx_of_cluster(cc); unsigned int last_index = cc->cluster_size - 1; loff_t psize; int i, err; |
79963d967 f2fs: shrink node... |
1170 1171 1172 1173 1174 1175 1176 1177 |
if (IS_NOQUOTA(inode)) { /* * We need to wait for node_write to avoid block allocation during * checkpoint. This can only happen to quota writes which can cause * the below discard race condition. */ down_read(&sbi->node_write); } else if (!f2fs_trylock_op(sbi)) { |
310830317 f2fs: compress: i... |
1178 |
goto out_free; |
79963d967 f2fs: shrink node... |
1179 |
} |
4c8ff7095 f2fs: support dat... |
1180 |
|
df77fbd8c f2fs: fix to avoi... |
1181 |
set_new_dnode(&dn, cc->inode, NULL, NULL, 0); |
4c8ff7095 f2fs: support dat... |
1182 1183 1184 1185 1186 1187 |
err = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); if (err) goto out_unlock_op; for (i = 0; i < cc->cluster_size; i++) { |
a2ced1ce1 f2fs: clean up co... |
1188 |
if (data_blkaddr(dn.inode, dn.node_page, |
4c8ff7095 f2fs: support dat... |
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 |
dn.ofs_in_node + i) == NULL_ADDR) goto out_put_dnode; } psize = (loff_t)(cc->rpages[last_index]->index + 1) << PAGE_SHIFT; err = f2fs_get_node_info(fio.sbi, dn.nid, &ni); if (err) goto out_put_dnode; fio.version = ni.version; |
c68d6c883 f2fs: compress: i... |
1200 |
cic = kmem_cache_zalloc(cic_entry_slab, GFP_NOFS); |
4c8ff7095 f2fs: support dat... |
1201 1202 1203 1204 1205 |
if (!cic) goto out_put_dnode; cic->magic = F2FS_COMPRESSED_PAGE_MAGIC; cic->inode = inode; |
e6c3948de f2fs: compress: u... |
1206 |
atomic_set(&cic->pending_pages, cc->nr_cpages); |
310830317 f2fs: compress: i... |
1207 |
cic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff7095 f2fs: support dat... |
1208 1209 1210 1211 1212 1213 1214 |
if (!cic->rpages) goto out_put_cic; cic->nr_rpages = cc->cluster_size; for (i = 0; i < cc->nr_cpages; i++) { f2fs_set_compressed_page(cc->cpages[i], inode, |
887347a09 f2fs: clean up {c... |
1215 |
cc->rpages[i + 1]->index, cic); |
4c8ff7095 f2fs: support dat... |
1216 |
fio.compressed_page = cc->cpages[i]; |
f567adb03 f2fs: fix to wait... |
1217 1218 1219 1220 1221 1222 |
fio.old_blkaddr = data_blkaddr(dn.inode, dn.node_page, dn.ofs_in_node + i + 1); /* wait for GCed page writeback via META_MAPPING */ f2fs_wait_on_block_writeback(inode, fio.old_blkaddr); |
4c8ff7095 f2fs: support dat... |
1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 |
if (fio.encrypted) { fio.page = cc->rpages[i + 1]; err = f2fs_encrypt_one_page(&fio); if (err) goto out_destroy_crypt; cc->cpages[i] = fio.encrypted_page; } } set_cluster_writeback(cc); for (i = 0; i < cc->cluster_size; i++) cic->rpages[i] = cc->rpages[i]; for (i = 0; i < cc->cluster_size; i++, dn.ofs_in_node++) { block_t blkaddr; |
a2ced1ce1 f2fs: clean up co... |
1239 |
blkaddr = f2fs_data_blkaddr(&dn); |
95978caa1 f2fs: fix to avoi... |
1240 |
fio.page = cc->rpages[i]; |
4c8ff7095 f2fs: support dat... |
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 |
fio.old_blkaddr = blkaddr; /* cluster header */ if (i == 0) { if (blkaddr == COMPRESS_ADDR) fio.compr_blocks++; if (__is_valid_data_blkaddr(blkaddr)) f2fs_invalidate_blocks(sbi, blkaddr); f2fs_update_data_blkaddr(&dn, COMPRESS_ADDR); goto unlock_continue; } if (fio.compr_blocks && __is_valid_data_blkaddr(blkaddr)) fio.compr_blocks++; if (i > cc->nr_cpages) { if (__is_valid_data_blkaddr(blkaddr)) { f2fs_invalidate_blocks(sbi, blkaddr); f2fs_update_data_blkaddr(&dn, NEW_ADDR); } goto unlock_continue; } f2fs_bug_on(fio.sbi, blkaddr == NULL_ADDR); if (fio.encrypted) fio.encrypted_page = cc->cpages[i - 1]; else fio.compressed_page = cc->cpages[i - 1]; cc->cpages[i - 1] = NULL; f2fs_outplace_write_data(&dn, &fio); (*submitted)++; unlock_continue: inode_dec_dirty_pages(cc->inode); unlock_page(fio.page); } if (fio.compr_blocks) f2fs_i_compr_blocks_update(inode, fio.compr_blocks - 1, false); f2fs_i_compr_blocks_update(inode, cc->nr_cpages, true); set_inode_flag(cc->inode, FI_APPEND_WRITE); if (cc->cluster_idx == 0) set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); f2fs_put_dnode(&dn); |
79963d967 f2fs: shrink node... |
1288 1289 1290 |
if (IS_NOQUOTA(inode)) up_read(&sbi->node_write); else |
435cbab95 f2fs: fix quota_s... |
1291 |
f2fs_unlock_op(sbi); |
4c8ff7095 f2fs: support dat... |
1292 |
|
c10c98203 f2fs: cover last_... |
1293 |
spin_lock(&fi->i_size_lock); |
4c8ff7095 f2fs: support dat... |
1294 1295 |
if (fi->last_disk_size < psize) fi->last_disk_size = psize; |
c10c98203 f2fs: cover last_... |
1296 |
spin_unlock(&fi->i_size_lock); |
4c8ff7095 f2fs: support dat... |
1297 1298 |
f2fs_put_rpages(cc); |
310830317 f2fs: compress: i... |
1299 1300 |
page_array_free(cc->inode, cc->cpages, cc->nr_cpages); cc->cpages = NULL; |
4c8ff7095 f2fs: support dat... |
1301 1302 1303 1304 |
f2fs_destroy_compress_ctx(cc); return 0; out_destroy_crypt: |
310830317 f2fs: compress: i... |
1305 |
page_array_free(cc->inode, cic->rpages, cc->cluster_size); |
4c8ff7095 f2fs: support dat... |
1306 1307 1308 1309 1310 1311 1312 1313 1314 |
for (--i; i >= 0; i--) fscrypt_finalize_bounce_page(&cc->cpages[i]); for (i = 0; i < cc->nr_cpages; i++) { if (!cc->cpages[i]) continue; f2fs_put_page(cc->cpages[i], 1); } out_put_cic: |
c68d6c883 f2fs: compress: i... |
1315 |
kmem_cache_free(cic_entry_slab, cic); |
4c8ff7095 f2fs: support dat... |
1316 1317 1318 |
out_put_dnode: f2fs_put_dnode(&dn); out_unlock_op: |
79963d967 f2fs: shrink node... |
1319 1320 1321 |
if (IS_NOQUOTA(inode)) up_read(&sbi->node_write); else |
435cbab95 f2fs: fix quota_s... |
1322 |
f2fs_unlock_op(sbi); |
310830317 f2fs: compress: i... |
1323 1324 1325 |
out_free: page_array_free(cc->inode, cc->cpages, cc->nr_cpages); cc->cpages = NULL; |
4c8ff7095 f2fs: support dat... |
1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 |
return -EAGAIN; } void f2fs_compress_write_end_io(struct bio *bio, struct page *page) { struct f2fs_sb_info *sbi = bio->bi_private; struct compress_io_ctx *cic = (struct compress_io_ctx *)page_private(page); int i; if (unlikely(bio->bi_status)) mapping_set_error(cic->inode->i_mapping, -EIO); |
5e6bbde95 f2fs: introduce m... |
1338 |
f2fs_compress_free_page(page); |
4c8ff7095 f2fs: support dat... |
1339 1340 |
dec_page_count(sbi, F2FS_WB_DATA); |
e6c3948de f2fs: compress: u... |
1341 |
if (atomic_dec_return(&cic->pending_pages)) |
4c8ff7095 f2fs: support dat... |
1342 1343 1344 1345 1346 1347 1348 |
return; for (i = 0; i < cic->nr_rpages; i++) { WARN_ON(!cic->rpages[i]); clear_cold_data(cic->rpages[i]); end_page_writeback(cic->rpages[i]); } |
310830317 f2fs: compress: i... |
1349 |
page_array_free(cic->inode, cic->rpages, cic->nr_rpages); |
c68d6c883 f2fs: compress: i... |
1350 |
kmem_cache_free(cic_entry_slab, cic); |
4c8ff7095 f2fs: support dat... |
1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 |
} static int f2fs_write_raw_pages(struct compress_ctx *cc, int *submitted, struct writeback_control *wbc, enum iostat_type io_type) { struct address_space *mapping = cc->inode->i_mapping; int _submitted, compr_blocks, ret; int i = -1, err = 0; compr_blocks = f2fs_compressed_blocks(cc); if (compr_blocks < 0) { err = compr_blocks; goto out_err; } for (i = 0; i < cc->cluster_size; i++) { if (!cc->rpages[i]) continue; retry_write: if (cc->rpages[i]->mapping != mapping) { unlock_page(cc->rpages[i]); continue; } BUG_ON(!PageLocked(cc->rpages[i])); ret = f2fs_write_single_data_page(cc->rpages[i], &_submitted, NULL, NULL, wbc, io_type, compr_blocks); if (ret) { if (ret == AOP_WRITEPAGE_ACTIVATE) { unlock_page(cc->rpages[i]); ret = 0; } else if (ret == -EAGAIN) { |
466357dc9 f2fs: fix potenti... |
1387 1388 1389 1390 1391 1392 1393 1394 1395 |
/* * for quota file, just redirty left pages to * avoid deadlock caused by cluster update race * from foreground operation. */ if (IS_NOQUOTA(cc->inode)) { err = 0; goto out_err; } |
4c8ff7095 f2fs: support dat... |
1396 1397 |
ret = 0; cond_resched(); |
5df7731f6 f2fs: introduce D... |
1398 1399 |
congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); |
4c8ff7095 f2fs: support dat... |
1400 |
lock_page(cc->rpages[i]); |
eb1353cfa f2fs: fix to chec... |
1401 1402 1403 1404 1405 |
if (!PageDirty(cc->rpages[i])) { unlock_page(cc->rpages[i]); continue; } |
4c8ff7095 f2fs: support dat... |
1406 1407 1408 1409 |
clear_page_dirty_for_io(cc->rpages[i]); goto retry_write; } err = ret; |
466357dc9 f2fs: fix potenti... |
1410 |
goto out_err; |
4c8ff7095 f2fs: support dat... |
1411 1412 1413 1414 1415 |
} *submitted += _submitted; } return 0; |
4c8ff7095 f2fs: support dat... |
1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 |
out_err: for (++i; i < cc->cluster_size; i++) { if (!cc->rpages[i]) continue; redirty_page_for_writepage(wbc, cc->rpages[i]); unlock_page(cc->rpages[i]); } return err; } int f2fs_write_multi_pages(struct compress_ctx *cc, int *submitted, struct writeback_control *wbc, enum iostat_type io_type) { |
4c8ff7095 f2fs: support dat... |
1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 |
int err; *submitted = 0; if (cluster_may_compress(cc)) { err = f2fs_compress_pages(cc); if (err == -EAGAIN) { goto write; } else if (err) { f2fs_put_rpages_wbc(cc, wbc, true, 1); goto destroy_out; } err = f2fs_write_compressed_pages(cc, submitted, wbc, io_type); |
4c8ff7095 f2fs: support dat... |
1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 |
if (!err) return 0; f2fs_bug_on(F2FS_I_SB(cc->inode), err != -EAGAIN); } write: f2fs_bug_on(F2FS_I_SB(cc->inode), *submitted); err = f2fs_write_raw_pages(cc, submitted, wbc, io_type); f2fs_put_rpages_wbc(cc, wbc, false, 0); destroy_out: f2fs_destroy_compress_ctx(cc); return err; } struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc) { |
4c8ff7095 f2fs: support dat... |
1461 1462 1463 |
struct decompress_io_ctx *dic; pgoff_t start_idx = start_idx_of_cluster(cc); int i; |
c68d6c883 f2fs: compress: i... |
1464 |
dic = kmem_cache_zalloc(dic_entry_slab, GFP_NOFS); |
4c8ff7095 f2fs: support dat... |
1465 1466 |
if (!dic) return ERR_PTR(-ENOMEM); |
310830317 f2fs: compress: i... |
1467 |
dic->rpages = page_array_alloc(cc->inode, cc->cluster_size); |
4c8ff7095 f2fs: support dat... |
1468 |
if (!dic->rpages) { |
c68d6c883 f2fs: compress: i... |
1469 |
kmem_cache_free(dic_entry_slab, dic); |
4c8ff7095 f2fs: support dat... |
1470 1471 1472 1473 1474 |
return ERR_PTR(-ENOMEM); } dic->magic = F2FS_COMPRESSED_PAGE_MAGIC; dic->inode = cc->inode; |
e6c3948de f2fs: compress: u... |
1475 |
atomic_set(&dic->pending_pages, cc->nr_cpages); |
4c8ff7095 f2fs: support dat... |
1476 1477 1478 1479 1480 1481 1482 1483 1484 |
dic->cluster_idx = cc->cluster_idx; dic->cluster_size = cc->cluster_size; dic->log_cluster_size = cc->log_cluster_size; dic->nr_cpages = cc->nr_cpages; dic->failed = false; for (i = 0; i < dic->cluster_size; i++) dic->rpages[i] = cc->rpages[i]; dic->nr_rpages = cc->cluster_size; |
310830317 f2fs: compress: i... |
1485 |
dic->cpages = page_array_alloc(dic->inode, dic->nr_cpages); |
4c8ff7095 f2fs: support dat... |
1486 1487 1488 1489 1490 |
if (!dic->cpages) goto out_free; for (i = 0; i < dic->nr_cpages; i++) { struct page *page; |
5e6bbde95 f2fs: introduce m... |
1491 |
page = f2fs_compress_alloc_page(); |
4c8ff7095 f2fs: support dat... |
1492 1493 1494 1495 |
if (!page) goto out_free; f2fs_set_compressed_page(page, cc->inode, |
887347a09 f2fs: clean up {c... |
1496 |
start_idx + i + 1, dic); |
4c8ff7095 f2fs: support dat... |
1497 1498 |
dic->cpages[i] = page; } |
4c8ff7095 f2fs: support dat... |
1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 |
return dic; out_free: f2fs_free_dic(dic); return ERR_PTR(-ENOMEM); } void f2fs_free_dic(struct decompress_io_ctx *dic) { int i; if (dic->tpages) { for (i = 0; i < dic->cluster_size; i++) { if (dic->rpages[i]) continue; |
8908e7531 f2fs: fix to veri... |
1514 1515 |
if (!dic->tpages[i]) continue; |
5e6bbde95 f2fs: introduce m... |
1516 |
f2fs_compress_free_page(dic->tpages[i]); |
4c8ff7095 f2fs: support dat... |
1517 |
} |
310830317 f2fs: compress: i... |
1518 |
page_array_free(dic->inode, dic->tpages, dic->cluster_size); |
4c8ff7095 f2fs: support dat... |
1519 1520 1521 1522 1523 1524 |
} if (dic->cpages) { for (i = 0; i < dic->nr_cpages; i++) { if (!dic->cpages[i]) continue; |
5e6bbde95 f2fs: introduce m... |
1525 |
f2fs_compress_free_page(dic->cpages[i]); |
4c8ff7095 f2fs: support dat... |
1526 |
} |
310830317 f2fs: compress: i... |
1527 |
page_array_free(dic->inode, dic->cpages, dic->nr_cpages); |
4c8ff7095 f2fs: support dat... |
1528 |
} |
310830317 f2fs: compress: i... |
1529 |
page_array_free(dic->inode, dic->rpages, dic->nr_rpages); |
c68d6c883 f2fs: compress: i... |
1530 |
kmem_cache_free(dic_entry_slab, dic); |
4c8ff7095 f2fs: support dat... |
1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 |
} void f2fs_decompress_end_io(struct page **rpages, unsigned int cluster_size, bool err, bool verity) { int i; for (i = 0; i < cluster_size; i++) { struct page *rpage = rpages[i]; if (!rpage) continue; |
23c51bed6 f2fs: fix to clea... |
1543 1544 1545 1546 1547 1548 |
if (err || PageError(rpage)) goto clear_uptodate; if (!verity || fsverity_verify_page(rpage)) { SetPageUptodate(rpage); goto unlock; |
4c8ff7095 f2fs: support dat... |
1549 |
} |
23c51bed6 f2fs: fix to clea... |
1550 1551 1552 1553 |
clear_uptodate: ClearPageUptodate(rpage); ClearPageError(rpage); unlock: |
4c8ff7095 f2fs: support dat... |
1554 1555 1556 |
unlock_page(rpage); } } |
310830317 f2fs: compress: i... |
1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 |
int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) { dev_t dev = sbi->sb->s_bdev->bd_dev; char slab_name[32]; sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev)); sbi->page_array_slab_size = sizeof(struct page *) << F2FS_OPTION(sbi).compress_log_size; sbi->page_array_slab = f2fs_kmem_cache_create(slab_name, sbi->page_array_slab_size); if (!sbi->page_array_slab) return -ENOMEM; return 0; } void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) { kmem_cache_destroy(sbi->page_array_slab); } |
c68d6c883 f2fs: compress: i... |
1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 |
static int __init f2fs_init_cic_cache(void) { cic_entry_slab = f2fs_kmem_cache_create("f2fs_cic_entry", sizeof(struct compress_io_ctx)); if (!cic_entry_slab) return -ENOMEM; return 0; } static void f2fs_destroy_cic_cache(void) { kmem_cache_destroy(cic_entry_slab); } static int __init f2fs_init_dic_cache(void) { dic_entry_slab = f2fs_kmem_cache_create("f2fs_dic_entry", sizeof(struct decompress_io_ctx)); if (!dic_entry_slab) return -ENOMEM; return 0; } static void f2fs_destroy_dic_cache(void) { kmem_cache_destroy(dic_entry_slab); } int __init f2fs_init_compress_cache(void) { int err; err = f2fs_init_cic_cache(); if (err) goto out; err = f2fs_init_dic_cache(); if (err) goto free_cic; return 0; free_cic: f2fs_destroy_cic_cache(); out: return -ENOMEM; } void f2fs_destroy_compress_cache(void) { f2fs_destroy_dic_cache(); f2fs_destroy_cic_cache(); } |