This patch moves functions from inode.c to indirect.c.
The moved functions are ext4_ind_* functions and their helpers.
Functions called from inode.c are declared extern.
Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Move two functions that will be needed by the indirect functions to be
moved to indirect.c as well as inode.c to truncate.h as inline
functions, so that we can avoid having duplicate copies of the
function (which can be a maintenance problem) without having to expose
them as globally functions.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In preparation for moving the indirect functions to a separate file,
move __ext4_check_blockref() to block_validity.c and rename it to
ext4_check_blockref() which is exported as globally visible function.
Also, rename the cpp macro ext4_check_inode_blockref() to
ext4_ind_check_inode(), to make it clear that it is only valid for use
with non-extent mapped inodes.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
We are going to move all ext4_ind_* functions to indirect.c.
Before we do that, let's rename 2 functions called ext4_indirect_*
to ext4_ind_*, to keep to the naming convention.
Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
We are about to move all indirect inode functions to a new file.
Before we do that, let's split ext4_ind_truncate() out of ext4_truncate()
leaving only generic code in the latter, so we will be able to move
ext4_ind_truncate() to the new file.
Signed-off-by: Amir Goldstein <amir73il@users.sf.net>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In function ext4_ext_insert_index when eh_entries of curp is
bigger than eh_max, error messages will be printed out, but the content
is about logical and ei_block, that's incorret.
Signed-off-by: Robin Dong <sanbai@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In journal checkpoint, we write the buffer and wait for its finish.
But in cfq, the async queue has a very low priority, and in our test,
if there are too many sync queues and every queue is filled up with
requests, the write request will be delayed for quite a long time and
all the tasks which are waiting for journal space will end with errors like:
INFO: task attr_set:3816 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
attr_set D ffff880028393480 0 3816 1 0x00000000
ffff8802073fbae8 0000000000000086 ffff8802140847c8 ffff8800283934e8
ffff8802073fb9d8 ffffffff8103e456 ffff8802140847b8 ffff8801ed728080
ffff8801db4bc080 ffff8801ed728450 ffff880028393480 0000000000000002
Call Trace:
[<ffffffff8103e456>] ? __dequeue_entity+0x33/0x38
[<ffffffff8103caad>] ? need_resched+0x23/0x2d
[<ffffffff814006a6>] ? thread_return+0xa2/0xbc
[<ffffffffa01f6224>] ? jbd2_journal_dirty_metadata+0x116/0x126 [jbd2]
[<ffffffffa01f6224>] ? jbd2_journal_dirty_metadata+0x116/0x126 [jbd2]
[<ffffffff81400d31>] __mutex_lock_common+0x14e/0x1a9
[<ffffffffa021dbfb>] ? brelse+0x13/0x15 [ext4]
[<ffffffff81400ddb>] __mutex_lock_slowpath+0x19/0x1b
[<ffffffff81400b2d>] mutex_lock+0x1b/0x32
[<ffffffffa01f927b>] __jbd2_journal_insert_checkpoint+0xe3/0x20c [jbd2]
[<ffffffffa01f547b>] start_this_handle+0x438/0x527 [jbd2]
[<ffffffff8106f491>] ? autoremove_wake_function+0x0/0x3e
[<ffffffffa01f560b>] jbd2_journal_start+0xa1/0xcc [jbd2]
[<ffffffffa02353be>] ext4_journal_start_sb+0x57/0x81 [ext4]
[<ffffffffa024a314>] ext4_xattr_set+0x6c/0xe3 [ext4]
[<ffffffffa024aaff>] ext4_xattr_user_set+0x42/0x4b [ext4]
[<ffffffff81145adb>] generic_setxattr+0x6b/0x76
[<ffffffff81146ac0>] __vfs_setxattr_noperm+0x47/0xc0
[<ffffffff81146bb8>] vfs_setxattr+0x7f/0x9a
[<ffffffff81146c88>] setxattr+0xb5/0xe8
[<ffffffff81137467>] ? do_filp_open+0x571/0xa6e
[<ffffffff81146d26>] sys_fsetxattr+0x6b/0x91
[<ffffffff81002d32>] system_call_fastpath+0x16/0x1b
So this patch tries to use WRITE_SYNC in __flush_batch so that the request will
be moved into sync queue and handled by cfq timely. We also use the new plug,
sot that all the WRITE_SYNC requests can be given as a whole when we unplug it.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jan Kara <jack@suse.cz>
Reported-by: Robin Dong <sanbai@taobao.com>
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
jbd2: Fix oops in jbd2_journal_remove_journal_head()
jbd2: Remove obsolete parameters in the comments for some jbd2 functions
ext4: fixed tracepoints cleanup
ext4: use FIEMAP_EXTENT_LAST flag for last extent in fiemap
ext4: Fix max file size and logical block counting of extent format file
ext4: correct comments for ext4_free_blocks()
* 'for-2.6.40' of git://linux-nfs.org/~bfields/linux:
nfsd4: fix break_lease flags on nfsd open
nfsd: link returns nfserr_delay when breaking lease
nfsd: v4 support requires CRYPTO
nfsd: fix dependency of nfsd on auth_rpcgss
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
devcgroup_inode_permission: take "is it a device node" checks to inlined wrapper
fix comment in generic_permission()
kill obsolete comment for follow_down()
proc_sys_permission() is OK in RCU mode
reiserfs_permission() doesn't need to bail out in RCU mode
proc_fd_permission() is doesn't need to bail out in RCU mode
nilfs2_permission() doesn't need to bail out in RCU mode
logfs doesn't need ->permission() at all
coda_ioctl_permission() is safe in RCU mode
cifs_permission() doesn't need to bail out in RCU mode
bad_inode_permission() is safe from RCU mode
ubifs: dereferencing an ERR_PTR in ubifs_mount()
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: avoid delayed metadata items during commits
btrfs: fix uninitialized return value
btrfs: fix wrong reservation when doing delayed inode operations
btrfs: Remove unused sysfs code
btrfs: fix dereference of ERR_PTR value
Btrfs: fix relocation races
Btrfs: set no_trans_join after trying to expand the transaction
Btrfs: protect the pending_snapshots list with trans_lock
Btrfs: fix path leakage on subvol deletion
Btrfs: drop the delalloc_bytes check in shrink_delalloc
Btrfs: check the return value from set_anon_super
nothing blocking there, since all instances of sysctl
->permissions() method are non-blocking - both of them,
that is.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
... and never did, what with its ->permission() being what we do by default
when ->permission is NULL...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
return -EIO; is *not* a blocking operation, thank you very much.
Nick, what the hell have you been smoking?
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
d251ed271d "ubifs: fix sget races" left out the goto from this
error path so the static checkers complain that we're dereferencing
"sb" when it's an ERR_PTR.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Thanks to Casey Bodley for pointing out that on a read open we pass 0,
instead of O_RDONLY, to break_lease, with the result that a read open is
treated like a write open for the purposes of lease breaking!
Reported-by: Casey Bodley <cbodley@citi.umich.edu>
Cc: stable@kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
tools/perf: Fix static build of perf tool
tracing: Fix regression in printk_formats file
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
clocksource: Make watchdog robust vs. interruption
timerfd: Fix wakeup of processes when timer is cancelled on clock change
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, MAINTAINERS: Add x86 MCE people
x86, efi: Do not reserve boot services regions within reserved areas
Amir Goldstein
Theodore Ts'o
Robin Dong
Tao Ma
Linus Torvalds
Al Viro
Dan Carpenter
J. Bruce Fields