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| author |   Jan Kara <jack@suse.cz> | 2013-06-04 13:21:11 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2013-06-04 13:21:11 -0400 |
| commit | 6b523df4fb5ae281ddbc817f40504b33e6226554 (patch) | |
| tree | f129ccf336689296ff21e34ed86712b25d437a65 /fs/ext4/ext4_jbd2.h | |
| parent | ext4: remove buffer_uninit handling (diff) | |
| download | linux-dev-6b523df4fb5ae281ddbc817f40504b33e6226554.tar.xz linux-dev-6b523df4fb5ae281ddbc817f40504b33e6226554.zip | |
ext4: use transaction reservation for extent conversion in ext4_end_io
Later we would like to clear PageWriteback bit only after extent
conversion from unwritten to written extents is performed. However it
is not possible to start a transaction after PageWriteback is set
because that violates lock ordering (and is easy to deadlock). So we
have to reserve a transaction before locking pages and sending them
for IO and later we use the transaction for extent conversion from
ext4_end_io().
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4_jbd2.h')
| -rw-r--r-- | fs/ext4/ext4_jbd2.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h index fdd865eb1879..2877258d9497 100644 --- a/fs/ext4/ext4_jbd2.h +++ b/fs/ext4/ext4_jbd2.h @@ -134,7 +134,8 @@ static inline int ext4_jbd2_credits_xattr(struct inode *inode) #define EXT4_HT_MIGRATE 8 #define EXT4_HT_MOVE_EXTENTS 9 #define EXT4_HT_XATTR 10 -#define EXT4_HT_MAX 11 +#define EXT4_HT_EXT_CONVERT 11 +#define EXT4_HT_MAX 12 /** * struct ext4_journal_cb_entry - Base structure for callback information. @@ -319,7 +320,7 @@ static inline handle_t *__ext4_journal_start(struct inode *inode, #define ext4_journal_stop(handle) \ __ext4_journal_stop(__func__, __LINE__, (handle)) -#define ext4_journal_start_reserve(handle, type) \ +#define ext4_journal_start_reserved(handle, type) \ __ext4_journal_start_reserved((handle), __LINE__, (type)) handle_t *__ext4_journal_start_reserved(handle_t *handle, unsigned int line, |