From: Dave Chinner Date: Fri, 6 Jun 2014 06:02:12 +0000 (+1000) Subject: xfs: kill xfs_buf_geterror() X-Git-Tag: next-20140610~57^2^2~3 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=36de95567f910f5544060f50346d8677ae13ad22;p=karo-tx-linux.git xfs: kill xfs_buf_geterror() Most of the callers are just calling ASSERT(!xfs_buf_geterror()) which means they are checking for bp->b_error == 0. If bp is null in this case, we will assert fail, and hence it's no different in result to oopsing because of a null bp. In some cases, errors have already been checked for or the function returning the buffer can't return a buffer with an error, so it's just a redundant assert. Either way, the assert can either be removed. The other two non-assert callers can just test for a buffer and error properly. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner --- diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index c1cf6a336a72..077c3417a54e 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -541,7 +541,6 @@ xfs_alloc_read_agfl( XFS_FSS_TO_BB(mp, 1), 0, &bp, &xfs_agfl_buf_ops); if (error) return error; - ASSERT(!xfs_buf_geterror(bp)); xfs_buf_set_ref(bp, XFS_AGFL_REF); *bpp = bp; return 0; diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index e80d59fdf89a..22707adb99ab 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -552,14 +552,11 @@ xfs_btree_get_bufl( xfs_fsblock_t fsbno, /* file system block number */ uint lock) /* lock flags for get_buf */ { - xfs_buf_t *bp; /* buffer pointer (return value) */ xfs_daddr_t d; /* real disk block address */ ASSERT(fsbno != NULLFSBLOCK); d = XFS_FSB_TO_DADDR(mp, fsbno); - bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); - ASSERT(!xfs_buf_geterror(bp)); - return bp; + return xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); } /* @@ -574,15 +571,12 @@ xfs_btree_get_bufs( xfs_agblock_t agbno, /* allocation group block number */ uint lock) /* lock flags for get_buf */ { - xfs_buf_t *bp; /* buffer pointer (return value) */ xfs_daddr_t d; /* real disk block address */ ASSERT(agno != NULLAGNUMBER); ASSERT(agbno != NULLAGBLOCK); d = XFS_AGB_TO_DADDR(mp, agno, agbno); - bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); - ASSERT(!xfs_buf_geterror(bp)); - return bp; + return xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize, lock); } /* @@ -722,7 +716,6 @@ xfs_btree_read_bufl( mp->m_bsize, lock, &bp, ops); if (error) return error; - ASSERT(!xfs_buf_geterror(bp)); if (bp) xfs_buf_set_ref(bp, refval); *bpp = bp; @@ -1178,7 +1171,6 @@ xfs_btree_read_buf_block( if (error) return error; - ASSERT(!xfs_buf_geterror(*bpp)); xfs_btree_set_refs(cur, *bpp); *block = XFS_BUF_TO_BLOCK(*bpp); return 0; diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index b8a3abf6cf47..a999a3941c81 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -298,11 +298,6 @@ extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, extern int xfs_bioerror_relse(struct xfs_buf *); -static inline int xfs_buf_geterror(xfs_buf_t *bp) -{ - return bp ? bp->b_error : ENOMEM; -} - /* Buffer Utility Routines */ extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 8752821443be..941f6e984ac4 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -1053,7 +1053,7 @@ xfs_buf_iodone_callbacks( static ulong lasttime; static xfs_buftarg_t *lasttarg; - if (likely(!xfs_buf_geterror(bp))) + if (likely(!bp->b_error)) goto do_callbacks; /* diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 868b19f096bf..8867d0232fac 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -353,10 +353,10 @@ xfs_qm_dqalloc( dqp->q_blkno, mp->m_quotainfo->qi_dqchunklen, 0); - - error = xfs_buf_geterror(bp); - if (error) + if (!bp) { + error = ENOMEM; goto error1; + } bp->b_ops = &xfs_dquot_buf_ops; /* diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index 8f711db61a0c..c254b1cac4f8 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -1640,7 +1640,6 @@ xfs_read_agi( if (error) return error; - ASSERT(!xfs_buf_geterror(*bpp)); xfs_buf_set_ref(*bpp, XFS_AGI_REF); return 0; } diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index a5f8bd9899d3..ae871df3a5a8 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1165,7 +1165,7 @@ xlog_iodone(xfs_buf_t *bp) /* * Race to shutdown the filesystem if we see an error. */ - if (XFS_TEST_ERROR((xfs_buf_geterror(bp)), l->l_mp, + if (XFS_TEST_ERROR(bp->b_error, l->l_mp, XFS_ERRTAG_IODONE_IOERR, XFS_RANDOM_IODONE_IOERR)) { xfs_buf_ioerror_alert(bp, __func__); xfs_buf_stale(bp); diff --git a/fs/xfs/xfs_rtbitmap.c b/fs/xfs/xfs_rtbitmap.c index b1f2fe8af4a8..f4dd697cac08 100644 --- a/fs/xfs/xfs_rtbitmap.c +++ b/fs/xfs/xfs_rtbitmap.c @@ -74,7 +74,6 @@ xfs_rtbuf_get( mp->m_bsize, 0, &bp, NULL); if (error) return error; - ASSERT(!xfs_buf_geterror(bp)); *bpp = bp; return 0; }