f2fs: use bool for booleans

Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

f2fs: introduce f2fs_kmem_cache_alloc to hide the unfailed, kmem cache allocation

Introduce the unfailed version of kmem_cache_alloc named f2fs_kmem_cache_alloc
to hide the retry routine and make th

f2fs: introduce f2fs_kmem_cache_alloc to hide the unfailed, kmem cache allocation

Introduce the unfailed version of kmem_cache_alloc named f2fs_kmem_cache_alloc
to hide the retry routine and make the code a bit cleaner.

v2:
Fix the wrong use of 'retry' tag pointed out by Gao feng.
Use more neat code to remove redundant tag suggested by Haicheng Li.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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f2fs: avoid to write during the recovery

This patch enhances the recovery routine not to write any data/node/meta until
its completion.
If any writes are sent to the disk, it could contaminate the w

f2fs: avoid to write during the recovery

This patch enhances the recovery routine not to write any data/node/meta until
its completion.
If any writes are sent to the disk, it could contaminate the written history
that will be used for further recovery.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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Merge tag 'v3.12-rc4' into next

Merge with mainline to bring in changes to input subsystem that were
committed through other trees.

Merge branch 'perf/urgent' into perf/core

Pick up the latest fixes before applying new patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v3.12-rc3' into irq/core

Merge Linux v3.12-rc3, to refresh the tree from a v3.11 base to a v3.12 base.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

Conflicts:
net/bluetooth/hci_core.c

Merge remote-tracking branch 'tip/timers/core' into fordlezcano/3.13/sched-clock64-conversion

Update to tip/timers/core and resolve minor conflict.

Conflicts:
drivers/clocksource/samsung_pwm_timer

Merge remote-tracking branch 'tip/timers/core' into fordlezcano/3.13/sched-clock64-conversion

Update to tip/timers/core and resolve minor conflict.

Conflicts:
drivers/clocksource/samsung_pwm_timer.c

Signed-off-by: John Stultz <john.stultz@linaro.org>

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Merge tag 'v3.12-rc2' into patchwork

Linux 3.12-rc2

* tag 'v3.12-rc2': (10774 commits)
Linux 3.12-rc2
cfq: explicitly use 64bit divide operation for 64bit arguments
block: Add nr_bios to bloc

Merge tag 'v3.12-rc2' into patchwork

Linux 3.12-rc2

* tag 'v3.12-rc2': (10774 commits)
Linux 3.12-rc2
cfq: explicitly use 64bit divide operation for 64bit arguments
block: Add nr_bios to block_rq_remap tracepoint
Btrfs: create the uuid tree on remount rw
btrfs: change extent-same to copy entire argument struct
Btrfs: dir_inode_operations should use btrfs_update_time also
btrfs: Add btrfs: prefix to kernel log output
btrfs: refuse to remount read-write after abort
Btrfs: btrfs_ioctl_default_subvol: Revert back to toplevel subvolume when arg is 0
Btrfs: don't leak transaction in btrfs_sync_file()
Btrfs: add the missing mutex unlock in write_all_supers()
Btrfs: iput inode on allocation failure
Btrfs: remove space_info->reservation_progress
Btrfs: kill delay_iput arg to the wait_ordered functions
Btrfs: fix worst case calculator for space usage
Revert "Btrfs: rework the overcommit logic to be based on the total size"
Btrfs: improve replacing nocow extents
Btrfs: drop dir i_size when adding new names on replay
Btrfs: replay dir_index items before other items
Btrfs: check roots last log commit when checking if an inode has been logged
...

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Merge tag 'v3.12-rc2' into drm-intel-next

Backmerge Linux 3.12-rc2 to prep for a bunch of -next patches:
- Header cleanup in intel_drv.h, both changed in -fixes and my current
-next pile.
- Cursor

Merge tag 'v3.12-rc2' into drm-intel-next

Backmerge Linux 3.12-rc2 to prep for a bunch of -next patches:
- Header cleanup in intel_drv.h, both changed in -fixes and my current
-next pile.
- Cursor handling cleanup for -next which depends upon the cursor
handling fix merged into -rc2.

All just trivial conflicts of the "changed adjacent lines" type:
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_drv.h

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Merge branch 'sched/urgent' into sched/core

Merge in the latest fixes before applying a dependent patch.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'for-linus' into for-next

Merge tag 'v3.11' into next

Merge with mainline to bring in sync changes to cyttsp4 driver.

Merge tag 'for-f2fs-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
"This patch-set includes the following major enhancement patches:
- su

Merge tag 'for-f2fs-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
"This patch-set includes the following major enhancement patches:
- support inline xattrs
- add sysfs support to control GCs explicitly
- add proc entry to show the current segment usage information
- improve the GC/SSR performance

The other bug fixes are as follows:
- avoid the overflow on status calculation
- fix some error handling routines
- fix inconsistent xattr states after power-off-recovery
- fix incorrect xattr node offset definition
- fix deadlock condition in fsync
- fix the fdatasync routine for power-off-recovery"

* tag 'for-f2fs-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (40 commits)
f2fs: optimize gc for better performance
f2fs: merge more bios of node block writes
f2fs: avoid an overflow during utilization calculation
f2fs: trigger GC when there are prefree segments
f2fs: use strncasecmp() simplify the string comparison
f2fs: fix omitting to update inode page
f2fs: support the inline xattrs
f2fs: add the truncate_xattr_node function
f2fs: introduce __find_xattr for readability
f2fs: reserve the xattr space dynamically
f2fs: add flags for inline xattrs
f2fs: fix error return code in init_f2fs_fs()
f2fs: fix wrong BUG_ON condition
f2fs: fix memory leak when init f2fs filesystem fail
f2fs: fix a compound statement label error
f2fs: avoid writing inode redundantly when creating a file
f2fs: alloc_page() doesn't return an ERR_PTR
f2fs: should cover i_xattr_nid with its xattr node page lock
f2fs: check the free space first in new_node_page
f2fs: clean up the needless end 'return' of void function
...

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f2fs: merge more bios of node block writes

Previously, we experience bio traces as follows when running simple sequential
write test.

f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500104

f2fs: merge more bios of node block writes

Previously, we experience bio traces as follows when running simple sequential
write test.

f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500104928, size = 4K
f2fs_do_submit_bio: type = NODE, io = no sync, sector = 499922208, size = 368K
f2fs_do_submit_bio: type = NODE, io = no sync, sector = 499914752, size = 140K

-> total 512K

The first one is to write an indirect node block, and the others are to write
direct node blocks.

The reason why there are two separate bios for direct node blocks is:
0. initial state
------------------ ------------------
| | |xxxxxxxx |
------------------ ------------------

1. write 368K
------------------ ------------------
| | |xxxxxxxxWWWWWWWW|
------------------ ------------------

2. write 140K
------------------ ------------------
|WWWWWWW | |xxxxxxxxWWWWWWWW|
------------------ ------------------

This is because f2fs_write_node_pages tries to write just 512K totally, so that
we can lose the chance to merge more bios nicely.

After this patch is applied, we can get the following bio traces.

f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500103168, size = 8K
f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500111368, size = 4K
f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500107272, size = 512K
f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500108296, size = 512K
f2fs_do_submit_bio: type = NODE, io = no sync, sector = 500109320, size = 500K

And finally, we can improve the sequential write performance,
from 458.775 MB/s to 479.945 MB/s on SSD.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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f2fs: support the inline xattrs

0. modified inode structure
--------------------------------------
metadata (e.g., i_mtime, i_ctime, etc)
--------------------------------------
direct pointers [0 ~

f2fs: support the inline xattrs

0. modified inode structure
--------------------------------------
metadata (e.g., i_mtime, i_ctime, etc)
--------------------------------------
direct pointers [0 ~ 873]

inline xattrs (200 bytes by default)

indirect pointers [0 ~ 4]
--------------------------------------
node footer
--------------------------------------

1. setxattr flow
- read_all_xattrs copies all the xattrs from inline and xattr node block.
- handle xattr entries
- write_all_xattrs copies modified xattrs into inline and xattr node block.

2. getxattr flow
- read_all_xattrs copies all the xattrs from inline and xattr node block.
- check target entries

3. Usage
# mount -t f2fs -o inline_xattr $DEV $MNT

Once mounted with the inline_xattr option, f2fs marks all the newly created
files to reserve an amount of inline xattr space explicitly inside the inode
block. Without the mount option, f2fs will not touch any existing files and
newly created files as well.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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f2fs: add the truncate_xattr_node function

The truncate_xattr_node function will be used by inline xattr.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

f2fs: reserve the xattr space dynamically

This patch enables the number of direct pointers inside on-disk inode block to
be changed dynamically according to the size of inline xattr space.

The numb

f2fs: reserve the xattr space dynamically

This patch enables the number of direct pointers inside on-disk inode block to
be changed dynamically according to the size of inline xattr space.

The number of direct pointers, ADDRS_PER_INODE, can be changed only if the file
has inline xattr flag.

The number of direct pointers that will be used by inline xattrs is defined as
F2FS_INLINE_XATTR_ADDRS.
Current patch assigns F2FS_INLINE_XATTR_ADDRS to 0 temporarily.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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f2fs: alloc_page() doesn't return an ERR_PTR

alloc_page() returns a NULL on failure, it never returns an ERR_PTR.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jaegeuk Kim

f2fs: alloc_page() doesn't return an ERR_PTR

alloc_page() returns a NULL on failure, it never returns an ERR_PTR.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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Merge remote-tracking branch 'linus/master' into testing

f2fs: should cover i_xattr_nid with its xattr node page lock

Previously, f2fs_setxattr assigns i_xattr_nid in the inode page inconsistently.

The scenario is:

= Thread 1 = = Thread 2 =

f2fs: should cover i_xattr_nid with its xattr node page lock

Previously, f2fs_setxattr assigns i_xattr_nid in the inode page inconsistently.

The scenario is:

= Thread 1 = = Thread 2 = = fi->i_xattr_nid = = on-disk nid =

f2fs_setxattr 0 0
new_node_page X 0
sync_inode_page X X
checkpoint X X -.
grab_cache_page X X |
--> allocate a new xattr node block or -ENOSPC <----------------'

At this moment, the checkpoint stores inconsistent data where the inode has
i_xattr_nid but actual xattr node block is not allocated yet.

So, we should assign the real i_xattr_nid only after its xattr node block is
allocated.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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f2fs: check the free space first in new_node_page

Let's check the free space in prior to the main process of allocating a new node
page.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

f2fs: clean up the needless end 'return' of void function

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

f2fs: introduce help function F2FS_NODE()

Introduce help function F2FS_NODE() to simplify the conversion of node_page to
f2fs_node.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by:

f2fs: introduce help function F2FS_NODE()

Introduce help function F2FS_NODE() to simplify the conversion of node_page to
f2fs_node.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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Merge commit 'Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux'

This backmerges Linus' merge commit of the latest drm-fixes pull:

commit 549f3a1218ba18fcde11ef0e22b07e6365645

Merge commit 'Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux'

This backmerges Linus' merge commit of the latest drm-fixes pull:

commit 549f3a1218ba18fcde11ef0e22b07e6365645788
Merge: 42577ca 058ca4a
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue Jul 23 15:47:08 2013 -0700

Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

We've accrued a few too many conflicts, but the real reason is that I
want to merge the 100% solution for Haswell concurrent registers
writes into drm-intel-next. But that depends upon the 90% bandaid
merged into -fixes:

commit a7cd1b8fea2f341b626b255d9898a5ca5fabbf0a
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri Jul 19 20:36:51 2013 +0100

drm/i915: Serialize almost all register access

Also, we can roll up on accrued conflicts.

Usually I'd backmerge a tagged -rc, but I want to get this done before
heading off to vacations next week ;-)

Conflicts:
drivers/gpu/drm/i915/i915_dma.c
drivers/gpu/drm/i915/i915_gem.c

v2: For added hilarity we have a init sequence conflict around the
gt_lock, so need to move that one, too. Spotted by Jani Nikula.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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