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[GFS2] Function meta_read optimization
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>
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@ -222,13 +222,14 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags,
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struct buffer_head **bhp)
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{
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*bhp = getbuf(gl, blkno, CREATE);
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if (!buffer_uptodate(*bhp))
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if (!buffer_uptodate(*bhp)) {
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ll_rw_block(READ_META, 1, bhp);
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if (flags & DIO_WAIT) {
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int error = gfs2_meta_wait(gl->gl_sbd, *bhp);
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if (error) {
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brelse(*bhp);
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return error;
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if (flags & DIO_WAIT) {
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int error = gfs2_meta_wait(gl->gl_sbd, *bhp);
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if (error) {
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brelse(*bhp);
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return error;
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}
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}
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}
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