xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xfs: simplify xfs_buf_get / xfs_buf_read interfaces

Browse Source 
Currently the low-level buffer cache interfaces are highly confusing
as we have a _flags variant of each that does actually respect the
flags, and one without _flags which has a flags argument that gets
ignored and overriden with a default set.  Given that very few places
use the default arguments get rid of the duplication and convert all
callers to pass the flags explicitly.  Also remove the now confusing
_flags postfix.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig
2009-11-24 18:02:23 +00:00
committed by Alex Elder
parent c355c656fe
commit 6ad112bfb5
9 changed files with 44 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
fs/xfs/xfs_trans_buf.c
View File

@@ -79,11 +79,8 @@ xfs_trans_get_buf(xfs_trans_t *tp,
/*
* Default to a normal get_buf() call if the tp is NULL.
*/
if (tp == NULL) {
bp = xfs_buf_get_flags(target_dev, blkno, len,
flags | BUF_BUSY);
return(bp);
}
if (tp == NULL)
return xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY);
/*
* If we find the buffer in the cache with this transaction
@@ -129,7 +126,7 @@ xfs_trans_get_buf(xfs_trans_t *tp,
* easily deadlock with our current transaction as well as cause
* us to run out of stack space.
*/
bp = xfs_buf_get_flags(target_dev, blkno, len, flags | BUF_BUSY);
bp = xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY);
if (bp == NULL) {
return NULL;
}
@@ -302,7 +299,7 @@ xfs_trans_read_buf(
* Default to a normal get_buf() call if the tp is NULL.
*/
if (tp == NULL) {
bp = xfs_buf_read_flags(target, blkno, len, flags | BUF_BUSY);
bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY);
if (!bp)
return (flags & XFS_BUF_TRYLOCK) ?
EAGAIN : XFS_ERROR(ENOMEM);
@@ -398,7 +395,7 @@ xfs_trans_read_buf(
* easily deadlock with our current transaction as well as cause
* us to run out of stack space.
*/
bp = xfs_buf_read_flags(target, blkno, len, flags | BUF_BUSY);
bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY);
if (bp == NULL) {
*bpp = NULL;
return 0;