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xfs: make xfs_trans_get_buf_map return an error code 

Convert xfs_trans_get_buf_map() to return numeric error codes like most
everywhere else in xfs.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2020-01-23 17:01:18 -08:00
parent 0e3eccce5e
commit 9676b54e6e
3 changed files with 23 additions and 22 deletions
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8
fs/xfs/libxfs/xfs_da_btree.c
View File

@ -2591,13 +2591,9 @@ xfs_da_get_buf(
if (error || nmap == 0)
goto out_free;
bp = xfs_trans_get_buf_map(tp, mp->m_ddev_targp, mapp, nmap, 0);
error = bp ? bp->b_error : -EIO;
if (error) {
if (bp)
xfs_trans_brelse(tp, bp);
error = xfs_trans_get_buf_map(tp, mp->m_ddev_targp, mapp, nmap, 0, &bp);
if (error)
goto out_free;
}
*bpp = bp;

15
fs/xfs/xfs_trans.h
View File

@ -169,10 +169,9 @@ int xfs_trans_alloc_empty(struct xfs_mount *mp,
struct xfs_trans **tpp);
void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
struct xfs_buftarg *target,
struct xfs_buf_map *map, int nmaps,
uint flags);
int xfs_trans_get_buf_map(struct xfs_trans *tp, struct xfs_buftarg *target,
struct xfs_buf_map *map, int nmaps, xfs_buf_flags_t flags,
struct xfs_buf **bpp);
static inline struct xfs_buf *
xfs_trans_get_buf(
@ -182,8 +181,14 @@ xfs_trans_get_buf(
int numblks,
uint flags)
{
struct xfs_buf *bp;
int error;
DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
error = xfs_trans_get_buf_map(tp, target, &map, 1, flags, &bp);
if (error)
return NULL;
return bp;
}
int xfs_trans_read_buf_map(struct xfs_mount *mp,

22
fs/xfs/xfs_trans_buf.c
View File

@ -112,24 +112,22 @@ xfs_trans_bjoin(
* If the transaction pointer is NULL, make this just a normal
* get_buf() call.
*/
struct xfs_buf *
int
xfs_trans_get_buf_map(
struct xfs_trans *tp,
struct xfs_buftarg *target,
struct xfs_buf_map *map,
int nmaps,
xfs_buf_flags_t flags)
xfs_buf_flags_t flags,
struct xfs_buf **bpp)
{
xfs_buf_t *bp;
struct xfs_buf_log_item *bip;
int error;
if (!tp) {
error = xfs_buf_get_map(target, map, nmaps, flags, &bp);
if (error)
return NULL;
return bp;
}
*bpp = NULL;
if (!tp)
return xfs_buf_get_map(target, map, nmaps, flags, bpp);
/*
* If we find the buffer in the cache with this transaction
@ -151,18 +149,20 @@ xfs_trans_get_buf_map(
ASSERT(atomic_read(&bip->bli_refcount) > 0);
bip->bli_recur++;
trace_xfs_trans_get_buf_recur(bip);
return bp;
*bpp = bp;
return 0;
}
error = xfs_buf_get_map(target, map, nmaps, flags, &bp);
if (error)
return NULL;
return error;
ASSERT(!bp->b_error);
_xfs_trans_bjoin(tp, bp, 1);
trace_xfs_trans_get_buf(bp->b_log_item);
return bp;
*bpp = bp;
return 0;
}
/*