17 Jan, 2006
19 commits
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Fix race in setting bitfields of fuse_conn. Spotted by Andrew Morton.
The two fields ->connected and ->mounted were always changed with the
fuse_lock held. But other bitfields in the same structure were changed
without the lock. In theory this could lead to losing the assignment of
even the ones under lock. The chosen solution is to change these two
fields to be a full unsigned type. The other bitfields aren't "important"
enough to warrant the extra complexity of full locking or changing them to
bitops.For all bitfields document why they are safe wrt. concurrent
assignments.Also make the initialization of the 'num_waiting' atomic counter explicit.
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch changes fuse_readpages() to send READ requests asynchronously.
This makes it possible for userspace filesystems to utilize the kernel
readahead logic instead of having to implement their own (resulting in double
caching).Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a separate function for filling in the READ request. This will make it
possible to send asynchronous READ requests as well as synchronous ones.Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Now the INIT requests can be completely handled in inode.c and the
fuse_send_init() function need not be global any more.Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add possibility for requests to run asynchronously and call an 'end' callback
when finished.With this, the special handling of the INIT and RELEASE requests can be
cleaned up too.Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add ability to abort a filesystem connection.
With the introduction of asynchronous reads, the ability to interrupt any
request is not enough to dissolve deadlocks, since now waiting for the request
completion (page unlocked) is independent of the actual request, so in a
deadlock all threads will be uninterruptible.The solution is to make it possible to abort all requests, even those
currently undergoing I/O to/from userspace. The natural interface for this is
'mount -f mountpoint', but that only works as long as the filesystem is
attached. So also add an 'abort' attribute to the sysfs view of the
connection.Signed-off-by: Miklos Szeredi
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds the 'waiting' attribute which indicates how many filesystem
requests are currently waiting to be completed. A non-zero value without any
filesystem activity indicates a hung or deadlocked filesystem.Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kobjectify fuse_conn, and make it visible under /sys/fs/fuse/connections.
Lacking any natural naming, connections are numbered.
This patch doesn't add any attributes, just the infrastructure.
Signed-off-by: Miklos Szeredi
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The ->connected flag for a fuse_conn object previously only indicated whether
the device file for this connection is currently open or not.Change it's meaning so that it indicates whether the connection is active or
not: now either umount or device release will clear the flag.The separate ->mounted flag is still needed for handling background requests.
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Create a new list for requests in the process of being transfered to/from
userspace. This will be needed to be able to abort all requests even those
currently under I/OSigned-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The state of request was made up of 2 bitfields (->sent and ->finished) and of
the fact that the request was on a list or not.Unify this into a single state field.
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- remove some unneeded assignments
- use kzalloc instead of kmalloc + memset
- simplify setting sb->s_fs_info
- in fuse_send_init() use fuse_get_request() instead of
do_get_request() helperSigned-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Inline keyword is unnecessary in most cases. Clean them up.
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Handle the case when the INIT request is answered with an error.
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This function used the request object after decrementing its reference count
and releasing the lock. This could in theory lead to all sorts of problems.Fix and simplify at the same time.
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
fuse_copy_finish() must be called before request_end(), since the later might
sleep, and no sleeping is allowed between fuse_copy_one() and
fuse_copy_finish() because of kmap_atomic()/kunmap_atomic() used in them.Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds an empty /sys/fs, which filesystems can use.
Signed-off-by: Miklos Szeredi
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The Rio Karma portable MP3 player has its own proprietary partition table.
The partition layout is similar to a DOS boot sector but it begins at a
different offset and uses a different magic number (0xAB56 instead of
0xAA55). Add support for it to enable mounting the device.Signed-off-by: Bob Copeland
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
like other routines here, to ensure buffers are correctly initialised
with respect to b_private/b_end_io. Fixes an odd interaction between
XFS and reiserfs.Signed-off-by: Nathan Scott
16 Jan, 2006
5 commits
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Signed-off-by: Christoph Hellwig
Signed-off-by: Nathan Scott -
Signed-off-by: Nathan Scott
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context.
SGI-PV: 946762
SGI-Modid: xfs-linux-melb:xfs-kern:24983aSigned-off-by: Nathan Scott
15 Jan, 2006
15 commits
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Mark a few VFS functions as mandatory inline (based on Al Viro's request);
these must be inline due to stack usage issues during a recursive loop that
happens during the recursive symlink resolution (symlink to a symlink to a
symlink ..)This patch at this point does not change behavior and is for documentation
purposes only (but this changes later in the series)Signed-off-by: Arjan van de Ven
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove the remaining kmalloc() wrapper bits from fs/smbfs/.
Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove remaining kmalloc wrapper bits from fs/ncpfs/.
Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
fs/quota_v2.c can, under some conditions, issue a kernel message that says,
in totality, 'failed read'. This patch does the following:1) Gives a hint who issued the error message, so people reading the logs
don't have to go grepping the entire kernel tree (with 11 false
positives).2) Say what amount of data we expected, and actually got.
Signed-off-by: Valdis Kletnieks
Cc: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove redundant NULL check in reiserfs_lookup() as d_splice_alias() can take
NULL inode as input.Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove redundant NULL check in isofs_lookup() as d_splice_alias() can take
NULL inode as input.Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove redundant NULL check in ext3_lookup() as d_splice_alias() can take NULL
inode as input.Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove redundant NULL check in ext2_lookup() as d_splice_alias() can take NULL
inode as input.Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Anything that writes into a tmpfs filesystem is liable to disproportionately
decrease the available memory on a particular node. Since there's no telling
what sort of application (e.g. dd/cp/cat) might be dropping large files
there, this lets the admin choose the appropriate default behavior for their
site's situation.Introduce a tmpfs mount option which allows specifying a memory policy and
a second option to specify the nodelist for that policy. With the default
policy, tmpfs will behave as it does today. This patch adds support for
preferred, bind, and interleave policies.The default policy will cause pages to be added to tmpfs files on the node
which is doing the writing. Some jobs expect a single process to create
and manage the tmpfs files. This results in a node which has a
significantly reduced number of free pages.With this patch, the administrator can specify the policy and nodes for
that policy where they would prefer allocations.This patch was originally written by Brent Casavant and Hugh Dickins. I
added support for the bind and preferred policies and the mpol_nodelist
mount option.Signed-off-by: Brent Casavant
Signed-off-by: Hugh Dickins
Signed-off-by: Robin Holt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove the "inline" keyword from a bunch of big functions in the kernel with
the goal of shrinking it by 30kb to 40kbSigned-off-by: Arjan van de Ven
Signed-off-by: Ingo Molnar
Acked-by: Jeff Garzik
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A Christoph suggested that the /proc/devices file be converted to use the
seq_file interface. This patch does that.I've obxerved one or two installation that had sufficiently large sans that
they overran the 4k limit on /proc/devices.Signed-off-by: Neil Horman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We forgot to initialise a couple of nameidata fields.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I tried to send the forcedeth maintainer an email, but it came back with:
"The mail address manfreds@colorfullife.com is not read anymore.
Please resent your mail to manfred@ instead of manfreds@."This patch fixes this.
Signed-off-by: Adrian Bunk
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This patch removes pointless parentheses from return statements.
Signed-off-by: Jesper Juhl
Signed-off-by: Adrian Bunk -
Here is update of ufs cleanup patch, brought on by the recently fixed
ubh_get_usb_second() bug that made some ugly code rather painfully
obvious. It also includes- fix compilation warnings which appears if debug mode turn on
- remove unnecessary duplication of code to support UFS2I tested it on ufs1 and ufs2 file-systems.
Signed-off-by: Evgeniy Dushistov
Signed-off-by: Linus Torvalds
14 Jan, 2006
1 commit
