linux/fs/f2fs
Matthew Wilcox f6bb2a2c0b xarray: add the xa_lock to the radix_tree_root
This results in no change in structure size on 64-bit machines as it
fits in the padding between the gfp_t and the void *.  32-bit machines
will grow the structure from 8 to 12 bytes.  Almost all radix trees are
protected with (at least) a spinlock, so as they are converted from
radix trees to xarrays, the data structures will shrink again.

Initialising the spinlock requires a name for the benefit of lockdep, so
RADIX_TREE_INIT() now needs to know the name of the radix tree it's
initialising, and so do IDR_INIT() and IDA_INIT().

Also add the xa_lock() and xa_unlock() family of wrappers to make it
easier to use the lock.  If we could rely on -fplan9-extensions in the
compiler, we could avoid all of this syntactic sugar, but that wasn't
added until gcc 4.6.

Link: http://lkml.kernel.org/r/20180313132639.17387-8-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11 10:28:39 -07:00
..
acl.c posix_acl: convert posix_acl.a_refcount from atomic_t to refcount_t 2018-01-02 19:27:28 -08:00
acl.h f2fs: remove dead code f2fs_check_acl 2016-09-14 16:52:36 -07:00
checkpoint.c f2fs: check blkaddr more accuratly before issue a bio 2018-03-18 23:33:50 -07:00
data.c f2fs: check blkaddr more accuratly before issue a bio 2018-03-18 23:33:50 -07:00
debug.c f2fs: inject fault to kzalloc 2018-01-02 19:27:29 -08:00
dir.c f2fs: introduce a new mount option test_dummy_encryption 2018-03-17 14:02:57 +09:00
extent_cache.c f2fs: remove redundant initialization of pointer 'p' 2018-03-13 08:05:45 +09:00
f2fs.h f2fs: remain written times to update inode during fsync 2018-04-03 18:52:47 -07:00
file.c f2fs: truncate preallocated blocks in error case 2018-04-02 20:09:34 -07:00
gc.c xarray: add the xa_lock to the radix_tree_root 2018-04-11 10:28:39 -07:00
gc.h f2fs: add an ioctl to disable GC for specific file 2018-01-22 14:56:35 -08:00
hash.c f2fs: check entire encrypted bigname when finding a dentry 2017-05-04 11:44:35 -04:00
inline.c f2fs: don't put dentry page in pagecache into highmem 2018-03-13 08:05:03 +09:00
inode.c f2fs: remain written times to update inode during fsync 2018-04-03 18:52:47 -07:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c f2fs: introduce a new mount option test_dummy_encryption 2018-03-17 14:02:57 +09:00
node.c f2fs: don't track new nat entry in nat set 2018-03-27 20:10:29 -07:00
node.h f2fs: don't track new nat entry in nat set 2018-03-27 20:10:29 -07:00
recovery.c f2fs: fix to handle looped node chain during recovery 2018-03-13 08:05:40 +09:00
segment.c f2fs: Add a segment type check in inplace write 2018-03-27 20:13:54 -07:00
segment.h f2fs: check blkaddr more accuratly before issue a bio 2018-03-18 23:33:50 -07:00
shrinker.c f2fs: obsolete ALLOC_NID_LIST list 2017-10-10 12:49:53 -07:00
super.c f2fs: no need to initialize zero value for GFP_F2FS_ZERO 2018-03-27 20:12:53 -07:00
sysfs.c f2fs: introduce F2FS_FEATURE_LOST_FOUND feature 2018-03-17 14:02:47 +09:00
trace.c f2fs: fix potential hangtask in f2fs_trace_pid 2018-01-02 19:27:30 -08:00
trace.h f2fs: add sbi and page pointer in f2fs_io_info 2015-05-28 15:41:32 -07:00
xattr.c f2fs: correct removexattr behavior for null valued extended attribute 2018-01-22 14:56:57 -08:00
xattr.h f2fs: guard macro variables with braces 2017-04-10 19:48:10 -07:00