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[GFS2] Function meta_read optimization

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This patch optimizes function gfs2_meta_read.  Basically, gfs2_meta_wait
was being called regardless of whether a disk read was requested.
This just pulls that wait into the if that triggers the read.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson
2007-12-11 19:29:17 -06:00
committed by Steven Whitehouse
parent b0d5fd3074
commit 15c7cee799
1 changed files with 7 additions and 6 deletions
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3
fs/gfs2/meta_io.c
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@@ -222,7 +222,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
struct buffer_head **bhp) struct buffer_head **bhp)
{ {
*bhp = getbuf(gl, blkno, CREATE); *bhp = getbuf(gl, blkno, CREATE);
if (!buffer_uptodate(*bhp)) if (!buffer_uptodate(*bhp)) {
ll_rw_block(READ_META, 1, bhp); ll_rw_block(READ_META, 1, bhp);
if (flags & DIO_WAIT) { if (flags & DIO_WAIT) {
int error = gfs2_meta_wait(gl->gl_sbd, *bhp); int error = gfs2_meta_wait(gl->gl_sbd, *bhp);
@@ -231,6 +231,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
return error; return error;
} }
} }
}
return 0; return 0;
} }