kernel.git/fs/ext4/move_extent.c, branch linux-3.17.y

ext4: fix incorrect locking in move_extent_per_page

2014-07-28T02:32:27Z

If we have to copy data we must drop i_data_sem because of get_blocks() will be called inside mext_page_mkuptodate(), but later we must reacquire it again because we are about to change extent's tree Signed-off-by: Dmitry Monakhov Signed-off-by: Theodore Ts'o Reviewed-by: Jan Kara

ext4: add missing BUFFER_TRACE before ext4_journal_get_write_access

2014-05-13T02:06:43Z

Make them more consistently Signed-off-by: xieliang Signed-off-by: "Theodore Ts'o"

ext4: rename uninitialized extents to unwritten

2014-04-21T03:45:47Z

Currently in ext4 there is quite a mess when it comes to naming unwritten extents. Sometimes we call it uninitialized and sometimes we refer to it as unwritten. The right name for the extent which has been allocated but does not contain any written data is _unwritten_. Other file systems are using this name consistently, even the buffer head state refers to it as unwritten. We need to fix this confusion in ext4. This commit changes every reference to an uninitialized extent (meaning allocated but unwritten) to unwritten extent. This includes comments, function names and variable names. It even covers abbreviation of the word uninitialized (such as uninit) and some misspellings. This commit does not change any of the code paths at all. This has been confirmed by comparing md5sums of the assembly code of each object file after all the function names were stripped from it. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o"

ext4: Add support FALLOC_FL_COLLAPSE_RANGE for fallocate

2014-02-23T20:18:59Z

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 Signed-off-by: Ashish Sangwan Tested-by: Dongsu Park Signed-off-by: "Theodore Ts'o"

ext4: remove an unneeded check in mext_page_mkuptodate()

2014-02-18T01:46:40Z

"err" is zero here, there is no need to check again. Signed-off-by: Dan Carpenter Signed-off-by: "Theodore Ts'o"

vfs: pull ext4's double-i_mutex-locking into common code

2013-11-09T05:16:39Z

We want to do this elsewhere as well. Also catch any attempts to use it for directories (where this ordering would conflict with ancestor-first directory ordering in lock_rename). Cc: Andreas Dilger Cc: Dave Chinner Acked-by: Jeff Layton Acked-by: "Theodore Ts'o" Signed-off-by: J. Bruce Fields Signed-off-by: Al Viro

ext4: cache all of an extent tree's leaf block upon reading

2013-08-17T01:23:41Z

When we read in an extent tree leaf block from disk, arrange to have all of its entries cached. In nearly all cases the in-memory representation will be more compact than the on-disk representation in the buffer cache, and it allows us to get the information without having to traverse the extent tree for successive extents. Signed-off-by: "Theodore Ts'o" Reviewed-by: Zheng Liu

ext4: delete unused variables

2013-06-17T12:56:26Z

This patch removed several unused variables. Signed-off-by: Jon Ernst Signed-off-by: "Theodore Ts'o"

ext4: mext_insert_extents should update extent block checksum

2013-04-19T18:04:12Z

Signed-off-by: Darrick J. Wong Signed-off-by: "Theodore Ts'o"

ext4: defragmentation code cleanup

2013-04-12T03:24:58Z

- grab_cache_page_write_begin() may not wait on page's writeback since (1d1d1a767206). But it is still reasonable to wait on page's writeback here in order to be on the safe side. - Fix miss typo: pass 'length' instead of 'end' to __block_write_begin() https://bugzilla.kernel.org/show_bug.cgi?id=56241 TESTCASE: git://oss.sgi.com/xfs/cmds/xfstests.git MKFS_OPTIONS="-b1024" ; ./check ext4/304 Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" Reviewed-by: Akira Fujita