08 Aug, 2014
1 commit
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Support RENAME_NOREPLACE and RENAME_EXCHANGE flags on hostfs if the
underlying filesystem supports it.Since renameat2(2) is not yet in any libc, use syscall(2) to invoke the
renameat2 syscall.Signed-off-by: Miklos Szeredi
Cc: Richard Weinberger
Signed-off-by: Christoph Hellwig
Signed-off-by: Al Viro
07 May, 2014
2 commits
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Signed-off-by: Al Viro
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Signed-off-by: Al Viro
04 Apr, 2014
1 commit
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Reclaim will be leaving shadow entries in the page cache radix tree upon
evicting the real page. As those pages are found from the LRU, an
iput() can lead to the inode being freed concurrently. At this point,
reclaim must no longer install shadow pages because the inode freeing
code needs to ensure the page tree is really empty.Add an address_space flag, AS_EXITING, that the inode freeing code sets
under the tree lock before doing the final truncate. Reclaim will check
for this flag before installing shadow pages.Signed-off-by: Johannes Weiner
Reviewed-by: Rik van Riel
Reviewed-by: Minchan Kim
Cc: Andrea Arcangeli
Cc: Bob Liu
Cc: Christoph Hellwig
Cc: Dave Chinner
Cc: Greg Thelen
Cc: Hugh Dickins
Cc: Jan Kara
Cc: KOSAKI Motohiro
Cc: Luigi Semenzato
Cc: Mel Gorman
Cc: Metin Doslu
Cc: Michel Lespinasse
Cc: Ozgun Erdogan
Cc: Peter Zijlstra
Cc: Roman Gushchin
Cc: Ryan Mallon
Cc: Tejun Heo
Cc: Vlastimil Babka
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jan, 2014
1 commit
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The hostfs_*() callback functions are all only used within
hostfs_kern.c, so make them static.Signed-off-by: James Hogan
Cc: Jeff Dike
Cc: Richard Weinberger
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: Richard Weinberger
16 Nov, 2013
1 commit
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Rename simple_delete_dentry() to always_delete_dentry() and export it.
Export simple_dentry_operations, while we are at it, and get rid of
their duplicatesSigned-off-by: Al Viro
07 Sep, 2013
1 commit
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We have to implement ->release() and trigger writeback from it.
Otherwise we might lose dirty pages at munmap().Signed-off-by: Richard Weinberger
29 Jun, 2013
1 commit
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Signed-off-by: Al Viro
05 May, 2013
3 commits
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The inode info structure is zeroed at allocation with kzalloc, and then
all but one of the fields (including the largest, vfs_inode) are
initialised explicitly. Switch to using kmalloc and initialise the
remaining field too.Reported-by: Al Viro
Signed-off-by: James Hogan
Signed-off-by: Al Viro -
Move HOSTFS_SUPER_MAGIC to to be with it's magical
friends from other file systems.Reported-by: Al Viro
Signed-off-by: James Hogan
Signed-off-by: Al Viro -
A "will unlock" comment was added to hostfs in the following commit,
along with a spinlock:Commit e9193059b1b3733695d5b80e667778311695aa73 ("hostfs: fix races in
dentry_name() and inode_name()").But the spinlock was subsequently removed in the following commit:
Commit ec2447c278ee973d35f38e53ca16ba7f965ae33d ("hostfs: simplify
locking").Since the comment is no longer applicable, remove it.
Reported-by: Al Viro
Signed-off-by: James Hogan
Cc: Nick Piggin
Signed-off-by: Al Viro
14 Mar, 2013
1 commit
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Pull namespace bugfixes from Eric Biederman:
"This tree includes a partial revert for "fs: Limit sys_mount to only
request filesystem modules." When I added the new style module aliases
to the filesystems I deleted the old ones. A bad move. It turns out
that distributions like Arch linux use module aliases when
constructing ramdisks. Which meant ultimately that an ext3 filesystem
mounted with ext4 would not result in the ext4 module being put into
the ramdisk.The other change in this tree adds a handful of filesystem module
alias I simply failed to add the first time. Which inconvinienced a
few folks using cifs.I don't want to inconvinience folks any longer than I have to so here
are these trivial fixes."* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
fs: Readd the fs module aliases.
fs: Limit sys_mount to only request filesystem modules. (Part 3)
11 Mar, 2013
2 commits
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Somehow I failed to add the MODULE_ALIAS_FS for cifs, hostfs, hpfs,
squashfs, and udf despite what I thought were my careful checks :(Add them now.
Signed-off-by: "Eric W. Biederman"
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With the commit 3be2be0a32c18b0fd6d623cda63174a332ca0de1 we removed vmtruncate,
but actaully there is no need to call inode_newsize_ok() because the checks are
already done in inode_change_ok() at the begin of the function.Signed-off-by: Marco Stornelli
Signed-off-by: Richard Weinberger
23 Feb, 2013
2 commits
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Signed-off-by: Al Viro
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Signed-off-by: Al Viro
10 Oct, 2012
3 commits
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Pull UML changes from Richard Weinberger:
"UML receives this time only cleanups.The most outstanding change is the 'include "foo.h"' do 'include
' conversion done by Al Viro.It touches many files, that's why the diffstat is rather big."
* 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
typo in UserModeLinux-HOWTO
hppfs: fix the return value of get_inode()
hostfs: drop vmtruncate
um: get rid of pointless include "..." where include will do
um: move sysrq.h out of include/shared
um/x86: merge 32 and 64 bit variants of ptrace.h
um/x86: merge 32 and 64bit variants of checksum.h -
Removed vmtruncate.
Signed-off-by: Marco Stornelli
Signed-off-by: Richard Weinberger -
Signed-off-by: Al Viro
Signed-off-by: Richard Weinberger
21 Sep, 2012
1 commit
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Cc: Jeff Dike
Cc: Richard Weinberger
Acked-by: Serge Hallyn
Signed-off-by: Eric W. Biederman
14 Jul, 2012
2 commits
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boolean "does it have to be exclusive?" flag is passed instead;
Local filesystem should just ignore it - the object is guaranteed
not to be there yet.Signed-off-by: Al Viro
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Just the flags; only NFS cares even about that, but there are
legitimate uses for such argument. And getting rid of that
completely would require splitting ->lookup() into a couple
of methods (at least), so let's leave that alone for now...Signed-off-by: Al Viro
06 May, 2012
1 commit
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After we moved inode_sync_wait() from end_writeback() it doesn't make sense
to call the function end_writeback() anymore. Rename it to clear_inode()
which well says what the function really does - set I_CLEAR flag.Signed-off-by: Jan Kara
Signed-off-by: Fengguang Wu
28 Mar, 2012
1 commit
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Pull UML changes from Richard Weinberger:
"Mostly bug fixes and cleanups"* 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (35 commits)
um: Update defconfig
um: Switch to large mcmodel on x86_64
MTD: Relax dependencies
um: Wire CONFIG_GENERIC_IO up
um: Serve io_remap_pfn_range()
Introduce CONFIG_GENERIC_IO
um: allow SUBARCH=x86
um: most of the SUBARCH uses can be killed
um: deadlock in line_write_interrupt()
um: don't bother trying to rebuild CHECKFLAGS for USER_OBJS
um: use the right ifdef around exports in user_syms.c
um: a bunch of headers can be killed by using generic-y
um: ptrace-generic.h doesn't need user.h
um: kill HOST_TASK_PID
um: remove pointless include of asm/fixmap.h from asm/pgtable.h
um: asm-offsets.h might as well come from underlying arch...
um: merge processor_{32,64}.h a bit...
um: switch close_chan() to struct line
um: race fix: initialize delayed_work *before* registering IRQ
um: line->have_irq is never checked...
...
25 Mar, 2012
1 commit
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Currently the (optional) d_type member in struct dirent is always
DT_UNKNOWN on hostfs, which may confuse buggy software using readdir().
Make sure to propagate its value from the underlying filesystem if it's
available there.Signed-off-by: Geert Uytterhoeven
Signed-off-by: Richard Weinberger
21 Mar, 2012
1 commit
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Signed-off-by: Al Viro
07 Jan, 2012
1 commit
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Signed-off-by: Al Viro
04 Jan, 2012
5 commits
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It's shared between kernel-compiled hostfs_kern and userland-compiled
hostfs_user (it's uml stuff). Use explicit type instead of playing
silly buggers with mode_t. It's not a userland API per se; it interacts
between code compiled with types same as for host kernel and, directly
linked to it, code talking to libc. Both sides come from the same
kernel source...Signed-off-by: Al Viro
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Signed-off-by: Al Viro
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vfs_create() ignores everything outside of 16bit subset of its
mode argument; switching it to umode_t is obviously equivalent
and it's the only caller of the methodSigned-off-by: Al Viro
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vfs_mkdir() gets int, but immediately drops everything that might not
fit into umode_t and that's the only caller of ->mkdir()...Signed-off-by: Al Viro
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Seeing that just about every destructor got that INIT_LIST_HEAD() copied into
it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once();
the cost of taking it into inode_init_always() will be negligible for pipes
and sockets and negative for everything else. Not to mention the removal of
boilerplate code from ->destroy_inode() instances...Signed-off-by: Al Viro
03 Nov, 2011
1 commit
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* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue:
vfs: add d_prune dentry operation
vfs: protect i_nlink
filesystems: add set_nlink()
filesystems: add missing nlink wrappers
logfs: remove unnecessary nlink setting
ocfs2: remove unnecessary nlink setting
jfs: remove unnecessary nlink setting
hypfs: remove unnecessary nlink setting
vfs: ignore error on forced remount
readlinkat: ensure we return ENOENT for the empty pathname for normal lookups
vfs: fix dentry leak in simple_fill_super()
02 Nov, 2011
2 commits
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everything in USER_OBJ gets it via -include user.h
Signed-off-by: Al Viro
Signed-off-by: Richard Weinberger -
Replace remaining direct i_nlink updates with a new set_nlink()
updater function.Signed-off-by: Miklos Szeredi
Tested-by: Toshiyuki Okajima
Signed-off-by: Christoph Hellwig
21 Jul, 2011
1 commit
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Btrfs needs to be able to control how filemap_write_and_wait_range() is called
in fsync to make it less of a painful operation, so push down taking i_mutex and
the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some
file systems can drop taking the i_mutex altogether it seems, like ext3 and
ocfs2. For correctness sake I just pushed everything down in all cases to make
sure that we keep the current behavior the same for everybody, and then each
individual fs maintainer can make up their mind about what to do from there.
Thanks,Acked-by: Jan Kara
Signed-off-by: Josef Bacik
Signed-off-by: Al Viro
20 Jul, 2011
3 commits
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not used by the instances anymore.
Signed-off-by: Al Viro
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redundant; all callers get it duplicated in mask & MAY_NOT_BLOCK and none of
them removes that bit.Signed-off-by: Al Viro
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its value depends only on inode and does not change; we might as
well store it in ->i_op->check_acl and be done with that.Signed-off-by: Al Viro
28 May, 2011
1 commit
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hostfs does not have problems with references to unlinked directories.
CC: Jeff Dike
CC: Richard Weinberger
CC: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: Sage Weil
Signed-off-by: Al Viro
