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| author | David Chinner <dgc@sgi.com> | 2008-04-10 12:24:30 +1000 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-04-18 12:02:20 +1000 |
| commit | b911ca0472c3762d2bafc4d21e432a9056844064 (patch) | |
| tree | 4ed23766782938e7316d087fa542cdbfd5fcadd7 /fs/xfs | |
| parent | 234f56aca20a4f66b6ba3d3bf2787634dd9e0999 (diff) | |
| download | kernel_samsung_tuna-b911ca0472c3762d2bafc4d21e432a9056844064.zip kernel_samsung_tuna-b911ca0472c3762d2bafc4d21e432a9056844064.tar.gz kernel_samsung_tuna-b911ca0472c3762d2bafc4d21e432a9056844064.tar.bz2 | |
[XFS] Sanitise xfs_log_force error checking.
xfs_log_force() is declared to return an error, but we almost never check
it. We don't need to check it in most cases; if there's a log I/O error
then we'll be shutting down the filesystem anyway and that means we'll
catch the error somewhere else.
However, on certain calls we should be returning an error - sync
transactions, fsync, sync writes, etc. so this isn't a pure black and
white distinction. Hence make xfs_log_force() a void function that issues
a warning to the syslog on error, and call _xfs_log_force() in all the
places where we actually care about the error status returned.
SGI-PV: 980084
SGI-Modid: xfs-linux-melb:xfs-kern:30832a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_log.c | 25 | ||||
| -rw-r--r-- | fs/xfs/xfs_log.h | 5 | ||||
| -rw-r--r-- | fs/xfs/xfs_rw.c | 8 |
3 files changed, 30 insertions, 8 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index bece882..e29ea0a 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -382,7 +382,27 @@ _xfs_log_force( return xlog_state_sync_all(log, flags, log_flushed); else return xlog_state_sync(log, lsn, flags, log_flushed); -} /* xfs_log_force */ +} /* _xfs_log_force */ + +/* + * Wrapper for _xfs_log_force(), to be used when caller doesn't care + * about errors or whether the log was flushed or not. This is the normal + * interface to use when trying to unpin items or move the log forward. + */ +void +xfs_log_force( + xfs_mount_t *mp, + xfs_lsn_t lsn, + uint flags) +{ + int error; + error = _xfs_log_force(mp, lsn, flags, NULL); + if (error) { + xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: " + "error %d returned.", error); + } +} + /* * Attaches a new iclog I/O completion callback routine during @@ -634,7 +654,8 @@ xfs_log_unmount_write(xfs_mount_t *mp) if (mp->m_flags & XFS_MOUNT_RDONLY) return 0; - xfs_log_force(mp, 0, XFS_LOG_FORCE|XFS_LOG_SYNC); + error = _xfs_log_force(mp, 0, XFS_LOG_FORCE|XFS_LOG_SYNC, NULL); + ASSERT(error || !(XLOG_FORCED_SHUTDOWN(log))); #ifdef DEBUG first_iclog = iclog = log->l_iclog; diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index 4cdac04..d1d678e 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -142,8 +142,9 @@ int _xfs_log_force(struct xfs_mount *mp, xfs_lsn_t lsn, uint flags, int *log_forced); -#define xfs_log_force(mp, lsn, flags) \ - _xfs_log_force(mp, lsn, flags, NULL); +void xfs_log_force(struct xfs_mount *mp, + xfs_lsn_t lsn, + uint flags); int xfs_log_mount(struct xfs_mount *mp, struct xfs_buftarg *log_target, xfs_daddr_t start_block, diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index cd3ece6..b0f31c0 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -126,11 +126,11 @@ xfs_write_sync_logforce( * when we return. */ if (iip && iip->ili_last_lsn) { - xfs_log_force(mp, iip->ili_last_lsn, - XFS_LOG_FORCE | XFS_LOG_SYNC); + error = _xfs_log_force(mp, iip->ili_last_lsn, + XFS_LOG_FORCE | XFS_LOG_SYNC, NULL); } else if (xfs_ipincount(ip) > 0) { - xfs_log_force(mp, (xfs_lsn_t)0, - XFS_LOG_FORCE | XFS_LOG_SYNC); + error = _xfs_log_force(mp, (xfs_lsn_t)0, + XFS_LOG_FORCE | XFS_LOG_SYNC, NULL); } } else { |