WSL2-Linux-Kernel/fs/ext4
Toshiyuki Okajima c39a7f84d7 ext4: provide function to release metadata pages under memory pressure
Pages in the page cache belonging to ext4 data files are released via
the ext4_releasepage() function specified in the ext4 inode's
address_space_ops.  However, metadata blocks (such as indirect blocks,
directory blocks, etc) are managed via the block device
address_space_ops, and they can not be released by
try_to_free_buffers() if they have a journal head attached to them.

To address this, we supply a release_metadata function which calls
jbd2_journal_try_to_free_buffers() function to free the metadata, and
which is called by the block device's blkdev_releasepage() function.

Signed-off-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: linux-fsdevel@vger.kernel.org
2009-01-05 22:38:48 -05:00
..
Kconfig fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 2008-10-20 11:43:59 -07:00
Makefile ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
acl.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
acl.h ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
balloc.c ext4: Use new buffer_head flag to check uninit group bitmaps initialization 2009-01-05 21:49:55 -05:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
dir.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
ext4.h ext4: Use new buffer_head flag to check uninit group bitmaps initialization 2009-01-05 21:49:55 -05:00
ext4_extents.h ext4: Remove i_ext_generation from ext4_inode_info structure 2008-11-04 18:46:03 -05:00
ext4_i.h ext4: Make ext4_group_t be an unsigned int 2009-01-05 22:18:16 -05:00
ext4_jbd2.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
ext4_jbd2.h ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
ext4_sb.h ext4: add fsync batch tuning knobs 2009-01-03 20:27:38 -05:00
extents.c ext4: sparse fixes 2008-11-22 15:04:59 -05:00
file.c ext4: sparse fixes 2008-11-22 15:04:59 -05:00
fsync.c ext4: Add debugging markers that can be used by systemtap 2008-10-05 20:50:06 -04:00
group.h ext4: Rename read_block_bitmap() to ext4_read_block_bitmap() 2008-07-11 19:27:31 -04:00
hash.c ext4: Add support for non-native signed/unsigned htree hash algorithms 2008-10-28 13:21:44 -04:00
ialloc.c ext4: Use new buffer_head flag to check uninit group bitmaps initialization 2009-01-05 21:49:55 -05:00
inode.c ext4: Use high 16 bits of the block group descriptor's free counts fields 2009-01-05 22:20:24 -05:00
ioctl.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
mballoc.c ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc 2009-01-05 21:49:12 -05:00
mballoc.h ext4: Don't allow new groups to be added during block allocation 2009-01-05 21:46:55 -05:00
migrate.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
namei.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
namei.h [PATCH] ext4: rename ext4 symbols to avoid duplication of ext3 symbols 2006-10-11 11:14:15 -07:00
resize.c ext4: mark the blocks/inode bitmap beyond end of group as used 2009-01-05 21:46:04 -05:00
super.c ext4: provide function to release metadata pages under memory pressure 2009-01-05 22:38:48 -05:00
symlink.c ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
xattr.c ext4: Allow ext4 to run without a journal 2009-01-07 00:06:22 -05:00
xattr.h ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
xattr_security.c ext4: move headers out of include/linux 2008-04-29 18:13:32 -04:00
xattr_trusted.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr_user.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00