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author | Steven Whitehouse <swhiteho@redhat.com> | 2006-10-03 11:10:41 -0400 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-10-03 11:10:41 -0400 |
commit | ddacfaf76dd620af9b73343a975749778321b51c (patch) | |
tree | 1199c2a78b5e2cdd6efc6965dd4cd8caa00ec482 /fs/gfs2/log.c | |
parent | f92a0b6ff43e8e07bbd5b1d2dd1cff130014f3c7 (diff) | |
download | kernel_samsung_smdk4412-ddacfaf76dd620af9b73343a975749778321b51c.zip kernel_samsung_smdk4412-ddacfaf76dd620af9b73343a975749778321b51c.tar.gz kernel_samsung_smdk4412-ddacfaf76dd620af9b73343a975749778321b51c.tar.bz2 |
[GFS2] Move logging code into log.c (mostly)
This moves the logging code from meta_io.c into log.c and glops.c. As a
result the routines can now be static and all the logging code is together
in log.c, leaving meta_io.c with just metadata i/o code in it.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/log.c')
-rw-r--r-- | fs/gfs2/log.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 6112d64..554fe5b 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -58,6 +58,90 @@ unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, return blks; } +/** + * gfs2_ail1_start_one - Start I/O on a part of the AIL + * @sdp: the filesystem + * @tr: the part of the AIL + * + */ + +static void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai) +{ + struct gfs2_bufdata *bd, *s; + struct buffer_head *bh; + int retry; + + BUG_ON(!spin_is_locked(&sdp->sd_log_lock)); + + do { + retry = 0; + + list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list, + bd_ail_st_list) { + bh = bd->bd_bh; + + gfs2_assert(sdp, bd->bd_ail == ai); + + if (!buffer_busy(bh)) { + if (!buffer_uptodate(bh)) { + gfs2_log_unlock(sdp); + gfs2_io_error_bh(sdp, bh); + gfs2_log_lock(sdp); + } + list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list); + continue; + } + + if (!buffer_dirty(bh)) + continue; + + list_move(&bd->bd_ail_st_list, &ai->ai_ail1_list); + + gfs2_log_unlock(sdp); + wait_on_buffer(bh); + ll_rw_block(WRITE, 1, &bh); + gfs2_log_lock(sdp); + + retry = 1; + break; + } + } while (retry); +} + +/** + * gfs2_ail1_empty_one - Check whether or not a trans in the AIL has been synced + * @sdp: the filesystem + * @ai: the AIL entry + * + */ + +static int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags) +{ + struct gfs2_bufdata *bd, *s; + struct buffer_head *bh; + + list_for_each_entry_safe_reverse(bd, s, &ai->ai_ail1_list, + bd_ail_st_list) { + bh = bd->bd_bh; + + gfs2_assert(sdp, bd->bd_ail == ai); + + if (buffer_busy(bh)) { + if (flags & DIO_ALL) + continue; + else + break; + } + + if (!buffer_uptodate(bh)) + gfs2_io_error_bh(sdp, bh); + + list_move(&bd->bd_ail_st_list, &ai->ai_ail2_list); + } + + return list_empty(&ai->ai_ail1_list); +} + void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags) { struct list_head *head = &sdp->sd_ail1_list; @@ -121,6 +205,31 @@ int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags) return ret; } + +/** + * gfs2_ail2_empty_one - Check whether or not a trans in the AIL has been synced + * @sdp: the filesystem + * @ai: the AIL entry + * + */ + +static void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai) +{ + struct list_head *head = &ai->ai_ail2_list; + struct gfs2_bufdata *bd; + + while (!list_empty(head)) { + bd = list_entry(head->prev, struct gfs2_bufdata, + bd_ail_st_list); + gfs2_assert(sdp, bd->bd_ail == ai); + bd->bd_ail = NULL; + list_del(&bd->bd_ail_st_list); + list_del(&bd->bd_ail_gl_list); + atomic_dec(&bd->bd_gl->gl_ail_count); + brelse(bd->bd_bh); + } +} + static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail) { struct gfs2_ail *ai, *safe; |