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b8a8684502
linux/fs/ext4
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Lukas Czerner b8a8684502 ext4: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate 
Introduce new FALLOC_FL_ZERO_RANGE flag for fallocate. This has the same
functionality as xfs ioctl XFS_IOC_ZERO_RANGE.

It can be used to convert a range of file to zeros preferably without
issuing data IO. Blocks should be preallocated for the regions that span
holes in the file, and the entire range is preferable converted to
unwritten extents

This can be also used to preallocate blocks past EOF in the same way as
with fallocate. Flag FALLOC_FL_KEEP_SIZE which should cause the inode
size to remain the same.

Also add appropriate tracepoints.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2014-03-18 18:05:35 -04:00
..
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_extents.h ext4: isolate ext4_extents.h file 2013-08-28 14:47:06 -04:00
ext4_jbd2.c jbd2: improve error messages for inconsistent journal heads 2014-03-12 16:38:03 -04:00
ext4_jbd2.h ext4: Fix misspellings using 'codespell' tool 2013-08-28 14:40:12 -04:00
ext4.h ext4: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate 2014-03-18 18:05:35 -04:00
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
extents.c ext4: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate 2014-03-18 18:05:35 -04:00
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: Introduce FALLOC_FL_ZERO_RANGE flag for fallocate 2014-03-18 18:05:35 -04:00
ioctl.c ext4: clean up error handling in swap_inode_boot_loader() 2014-02-17 20:44:36 -05:00
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
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: only call sync_filesystm() when remounting read-only 2014-03-13 22:49:42 -04:00
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_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
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