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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-25 09:57:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-25 09:57:41 -0700 |
| commit | ae005cbed12d0b340b04b59d6f5c56e710b3895d (patch) | |
| tree | d464865bcc97bea05eab4eba0d10bcad4ec89b93 /include/linux | |
| parent | 3961cdf85b749f6bab50ad31ee97e9277e7a3b70 (diff) | |
| parent | 0ba0851714beebb800992e5105a79dc3a4c504b0 (diff) | |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (43 commits)
ext4: fix a BUG in mb_mark_used during trim.
ext4: unused variables cleanup in fs/ext4/extents.c
ext4: remove redundant set_buffer_mapped() in ext4_da_get_block_prep()
ext4: add more tracepoints and use dev_t in the trace buffer
ext4: don't kfree uninitialized s_group_info members
ext4: add missing space in printk's in __ext4_grp_locked_error()
ext4: add FITRIM to compat_ioctl.
ext4: handle errors in ext4_clear_blocks()
ext4: unify the ext4_handle_release_buffer() api
ext4: handle errors in ext4_rename
jbd2: add COW fields to struct jbd2_journal_handle
jbd2: add the b_cow_tid field to journal_head struct
ext4: Initialize fsync transaction ids in ext4_new_inode()
ext4: Use single thread to perform DIO unwritten convertion
ext4: optimize ext4_bio_write_page() when no extent conversion is needed
ext4: skip orphan cleanup if fs has unknown ROCOMPAT features
ext4: use the nblocks arg to ext4_truncate_restart_trans()
ext4: fix missing iput of root inode for some mount error paths
ext4: make FIEMAP and delayed allocation play well together
ext4: suppress verbose debugging information if malloc-debug is off
...
Fi up conflicts in fs/ext4/super.c due to workqueue changes
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/jbd2.h | 28 | ||||
| -rw-r--r-- | include/linux/journal-head.h | 7 |
2 files changed, 32 insertions, 3 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 27e79c27ba0..a32dcaec04e 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -432,13 +432,35 @@ struct jbd2_journal_handle int h_err; /* Flags [no locking] */ - unsigned int h_sync: 1; /* sync-on-close */ - unsigned int h_jdata: 1; /* force data journaling */ - unsigned int h_aborted: 1; /* fatal error on handle */ + unsigned int h_sync:1; /* sync-on-close */ + unsigned int h_jdata:1; /* force data journaling */ + unsigned int h_aborted:1; /* fatal error on handle */ + unsigned int h_cowing:1; /* COWing block to snapshot */ + + /* Number of buffers requested by user: + * (before adding the COW credits factor) */ + unsigned int h_base_credits:14; + + /* Number of buffers the user is allowed to dirty: + * (counts only buffers dirtied when !h_cowing) */ + unsigned int h_user_credits:14; + #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map h_lockdep_map; #endif + +#ifdef CONFIG_JBD2_DEBUG + /* COW debugging counters: */ + unsigned int h_cow_moved; /* blocks moved to snapshot */ + unsigned int h_cow_copied; /* blocks copied to snapshot */ + unsigned int h_cow_ok_jh; /* blocks already COWed during current + transaction */ + unsigned int h_cow_ok_bitmap; /* blocks not set in COW bitmap */ + unsigned int h_cow_ok_mapped;/* blocks already mapped in snapshot */ + unsigned int h_cow_bitmaps; /* COW bitmaps created */ + unsigned int h_cow_excluded; /* blocks set in exclude bitmap */ +#endif }; diff --git a/include/linux/journal-head.h b/include/linux/journal-head.h index 525aac3c97d..44e95d0a721 100644 --- a/include/linux/journal-head.h +++ b/include/linux/journal-head.h @@ -41,6 +41,13 @@ struct journal_head { unsigned b_modified; /* + * This feild tracks the last transaction id in which this buffer + * has been cowed + * [jbd_lock_bh_state()] + */ + unsigned b_cow_tid; + + /* * Copy of the buffer data frozen for writing to the log. * [jbd_lock_bh_state()] */ |