Namjae Jeon 9eb79482a9 ext4: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate ... This patch implements fallocate's FALLOC_FL_COLLAPSE_RANGE for Ext4. The semantics of this flag are following: 1) It collapses the range lying between offset and length by removing any data blocks which are present in this range and than updates all the logical offsets of extents beyond "offset + len" to nullify the hole created by removing blocks. In short, it does not leave a hole. 2) It should be used exclusively. No other fallocate flag in combination. 3) Offset and length supplied to fallocate should be fs block size aligned in case of xfs and ext4. 4) Collaspe range does not work beyond i_size. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com> Tested-by: Dongsu Park <dongsu.park@profitbricks.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>		2014-02-23 15:18:59 -05:00
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Kconfig	ext4: fix Kconfig documentation for CONFIG_EXT4_DEBUG	2013-04-21 20:32:03 -04:00
Makefile	ext4: Remove CONFIG_EXT4_FS_XATTR	2012-12-10 16:30:43 -05:00
acl.c	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
acl.h	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
balloc.c	ext4: don't count free clusters from a corrupt block group	2013-10-31 11:46:31 -04:00
bitmap.c	ext4: Checksum the block bitmap properly with bigalloc enabled	2012-10-22 00:34:32 -04:00
block_validity.c	fs/ext4: use rbtree postorder iteration helper instead of opencoding	2014-01-23 16:37:03 -08:00
dir.c	fs/ext4: use rbtree postorder iteration helper instead of opencoding	2014-01-23 16:37:03 -08:00
ext4.h	ext4: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate	2014-02-23 15:18:59 -05:00
ext4_extents.h	ext4: isolate ext4_extents.h file	2013-08-28 14:47:06 -04:00
ext4_jbd2.c	ext4: call ext4_error_inode() if jbd2_journal_dirty_metadata() fails	2013-12-02 09:31:36 -05:00
ext4_jbd2.h	ext4: Fix misspellings using 'codespell' tool	2013-08-28 14:40:12 -04:00
extents.c	ext4: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate	2014-02-23 15:18:59 -05:00
extents_status.c	ext4: silence warnings in extent status tree debugging code	2014-02-20 16:09:12 -05:00
extents_status.h	ext4: add ext4_es_store_pblock_status()	2014-02-19 20:15:15 -05:00
file.c	fix O_SYNC|O_APPEND syncing the wrong range on write()	2014-02-09 15:18:09 -05:00
fsync.c	ext4: Fix fsync error handling after filesystem abort	2013-06-12 22:38:04 -04:00
hash.c	ext4: reduce one "if" comparison in ext4_dirhash()	2013-02-01 22:33:21 -05:00
ialloc.c	ext4: use prandom_u32() instead of get_random_bytes()	2013-11-08 00:14:53 -05:00
indirect.c	ext4: isolate ext4_extents.h file	2013-08-28 14:47:06 -04:00
inline.c	ext4: delete "set but not used" variables	2014-01-11 13:26:56 -05:00
inode.c	ext4: avoid exposure of stale data in ext4_punch_hole()	2014-02-20 16:58:05 -05:00
ioctl.c	ext4: clean up error handling in swap_inode_boot_loader()	2014-02-17 20:44:36 -05:00
mballoc.c	ext4: remove unused ac_ex_scanned	2014-02-20 13:32:10 -05:00
mballoc.h	ext4: remove unused ac_ex_scanned	2014-02-20 13:32:10 -05:00
migrate.c	ext4: Fix misspellings using 'codespell' tool	2013-08-28 14:40:12 -04:00
mmp.c	ext4: use prandom_u32() instead of get_random_bytes()	2013-11-08 00:14:53 -05:00
move_extent.c	ext4: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate	2014-02-23 15:18:59 -05:00
namei.c	Bug fixes and cleanups for ext4. We also enable the punch hole	2014-01-28 08:54:16 -08:00
page-io.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
resize.c	ext4: fix online resize with a non-standard blocks per group setting	2014-02-15 22:42:25 -05:00
super.c	ext4: Add __init marking to init_inodecache	2014-02-17 20:34:53 -05:00
symlink.c	ext4: Remove CONFIG_EXT4_FS_XATTR	2012-12-10 16:30:43 -05:00
truncate.h	ext4: move common truncate functions to header file	2011-06-27 19:16:04 -04:00
xattr.c	ext4: don't calculate total xattr header size unless needed	2014-02-19 20:15:21 -05:00
xattr.h	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
xattr_security.c	Merge branch 'for_linus' into for_linus_merged	2012-01-10 11:54:07 -05:00
xattr_trusted.c	ext2/3/4: delete unneeded includes of module.h	2012-01-09 13:52:10 +01:00
xattr_user.c	ext2/3/4: delete unneeded includes of module.h	2012-01-09 13:52:10 +01:00