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| author | Mark Fasheh <mark.fasheh@oracle.com> | 2007-04-16 17:28:51 -0700 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2007-04-26 15:07:45 -0700 |
| commit | 7cdfc3a1c3971c9125c317cb8c2525745851798e (patch) | |
| tree | ac0103cba9eaf0bc07b2e63893fa4e9637e6934e /fs/ocfs2 | |
| parent | 8110b073a9135acf0a71bccfc20c0d1023f179c6 (diff) | |
| download | kernel_samsung_tuna-7cdfc3a1c3971c9125c317cb8c2525745851798e.zip kernel_samsung_tuna-7cdfc3a1c3971c9125c317cb8c2525745851798e.tar.gz kernel_samsung_tuna-7cdfc3a1c3971c9125c317cb8c2525745851798e.tar.bz2 | |
ocfs2: Remember rw lock level during direct io
Cluster locking might have been redone because a direct write won't
complete, so this needs to be reflected in the iocb.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/aops.c | 9 | ||||
| -rw-r--r-- | fs/ocfs2/aops.h | 13 | ||||
| -rw-r--r-- | fs/ocfs2/file.c | 4 |
3 files changed, 19 insertions, 7 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index b74971e..56963e6 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -522,12 +522,17 @@ static void ocfs2_dio_end_io(struct kiocb *iocb, void *private) { struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode; + int level; /* this io's submitter should not have unlocked this before we could */ BUG_ON(!ocfs2_iocb_is_rw_locked(iocb)); + ocfs2_iocb_clear_rw_locked(iocb); - up_read(&inode->i_alloc_sem); - ocfs2_rw_unlock(inode, 0); + + level = ocfs2_iocb_rw_locked_level(iocb); + if (!level) + up_read(&inode->i_alloc_sem); + ocfs2_rw_unlock(inode, level); } /* diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index 1b4ba53..45821d4 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -97,9 +97,16 @@ int ocfs2_map_and_write_splice_data(struct inode *inode, /* all ocfs2_dio_end_io()'s fault */ #define ocfs2_iocb_is_rw_locked(iocb) \ test_bit(0, (unsigned long *)&iocb->private) -#define ocfs2_iocb_set_rw_locked(iocb) \ - set_bit(0, (unsigned long *)&iocb->private) +static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level) +{ + set_bit(0, (unsigned long *)&iocb->private); + if (level) + set_bit(1, (unsigned long *)&iocb->private); + else + clear_bit(1, (unsigned long *)&iocb->private); +} #define ocfs2_iocb_clear_rw_locked(iocb) \ clear_bit(0, (unsigned long *)&iocb->private) - +#define ocfs2_iocb_rw_locked_level(iocb) \ + test_bit(1, (unsigned long *)&iocb->private) #endif /* OCFS2_FILE_H */ diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index e34474c..520a2a6 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1542,7 +1542,7 @@ relock: pos = *ppos; /* communicate with ocfs2_dio_end_io */ - ocfs2_iocb_set_rw_locked(iocb); + ocfs2_iocb_set_rw_locked(iocb, rw_level); if (direct_io) { written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos, @@ -1788,7 +1788,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb, } rw_level = 0; /* communicate with ocfs2_dio_end_io */ - ocfs2_iocb_set_rw_locked(iocb); + ocfs2_iocb_set_rw_locked(iocb, rw_level); } /* |