diff options
| author | Jan Kara <jack@suse.cz> | 2019-11-05 17:44:16 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2019-11-05 16:00:48 -0500 |
| commit | a413036791d040e33badcc634453a4d0c0705499 (patch) | |
| tree | e975f73d65996deec9fcc1504ae28bd9f2c05e77 /fs/ext4/ext4_jbd2.c | |
| parent | f2890730f8292831b7741d89a65b9c6834d85ee6 (diff) | |
ext4: Provide function to handle transaction restarts
Provide ext4_journal_ensure_credits_fn() function to ensure transaction
has given amount of credits and call helper function to prepare for
restarting a transaction. This allows to remove some boilerplate code
from various places, add proper error handling for the case where
transaction extension or restart fails, and reduces following changes
needed for proper revoke record reservation tracking.
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191105164437.32602-10-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4_jbd2.c')
| -rw-r--r-- | fs/ext4/ext4_jbd2.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index 7c70b08d104c..2b98d893cda9 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -133,6 +133,17 @@ handle_t *__ext4_journal_start_reserved(handle_t *handle, unsigned int line, return handle; } +int __ext4_journal_ensure_credits(handle_t *handle, int check_cred, + int extend_cred) +{ + if (!ext4_handle_valid(handle)) + return 0; + if (handle->h_buffer_credits >= check_cred) + return 0; + return ext4_journal_extend(handle, + extend_cred - handle->h_buffer_credits); +} + static void ext4_journal_abort_handle(const char *caller, unsigned int line, const char *err_fn, struct buffer_head *bh, |