linux.git/fs/jfs/file.c, branch v4.2

jfs: removed a prohibited space after opening parenthesis

2015-06-01T17:22:30+00:00

Fixed a coding style issue.

Signed-off-by: Nan Jia 
Signed-off-by: Dave Kleikamp

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15T19:06:57+00:00

that's the bulk of filesystem drivers dealing with inodes of their own

Signed-off-by: David Howells 
Signed-off-by: Al Viro

make new_sync_{read,write}() static

2015-04-12T02:29:40+00:00

All places outside of core VFS that checked ->read and ->write for being NULL or
called the methods directly are gone now, so NULL {read,write} with non-NULL
{read,write}_iter will do the right thing in all cases.

Signed-off-by: Al Viro

vfs: add support for a lazytime mount option

2015-02-05T07:45:00+00:00

Add a new mount option which enables a new "lazytime" mode.  This mode
causes atime, mtime, and ctime updates to only be made to the
in-memory version of the inode.  The on-disk times will only get
updated when (a) if the inode needs to be updated for some non-time
related change, (b) if userspace calls fsync(), syncfs() or sync(), or
(c) just before an undeleted inode is evicted from memory.

This is OK according to POSIX because there are no guarantees after a
crash unless userspace explicitly requests via a fsync(2) call.

For workloads which feature a large number of random write to a
preallocated file, the lazytime mount option significantly reduces
writes to the inode table.  The repeated 4k writes to a single block
will result in undesirable stress on flash devices and SMR disk
drives.  Even on conventional HDD's, the repeated writes to the inode
table block will trigger Adjacent Track Interference (ATI) remediation
latencies, which very negatively impact long tail latencies --- which
is a very big deal for web serving tiers (for example).

Google-Bug-Id: 18297052

Signed-off-by: Theodore Ts'o 
Signed-off-by: Al Viro

->splice_write() via ->write_iter()

2014-06-12T04:18:51+00:00

iter_file_splice_write() - a ->splice_write() instance that gathers the
pipe buffers, builds a bio_vec-based iov_iter covering those and feeds
it to ->write_iter().  A bunch of simple cases coverted to that...

[AV: fixed the braino spotted by Cyrill]

Signed-off-by: Al Viro

write_iter variants of {__,}generic_file_aio_write()

2014-05-06T21:38:00+00:00

Signed-off-by: Al Viro

switch simple generic_file_aio_read() users to ->read_iter()

2014-05-06T21:37:55+00:00

Signed-off-by: Al Viro

jfs: use generic posix ACL infrastructure

2014-01-26T04:58:22+00:00

Copy the scheme I introduced to btrfs many years ago to only use the
xattr handler for ACLs, but pass plain attrs straight through.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Dave Kleikamp 
Signed-off-by: Al Viro

jfs: drop vmtruncate

2012-12-20T23:40:52+00:00

Removed vmtruncate

Signed-off-by: Marco Stornelli 
Signed-off-by: Al Viro

userns: Convert jfs to use kuid/kgid where appropriate

2012-09-21T10:13:33+00:00

Cc: Dave Kleikamp 
Signed-off-by: Eric W. Biederman