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authorPatrick McHardy <kaber@trash.net>2013-03-31 18:10:34 +0200
committerPatrick McHardy <kaber@trash.net>2013-03-31 18:10:34 +0200
commit70711d223510ba1773cfe1d7770a56141c815ff8 (patch)
tree4a71f38a3a554ddecaa31b7d8c6bc49b7d1705b4 /fs/gfs2/bmap.c
parentd53b4ed072d9779cdf53582c46436dec06d0961f (diff)
parent19f949f52599ba7c3f67a5897ac6be14bfcb1200 (diff)
Merge tag 'v3.8' of /home/kaber/src/repos/linux
Linux 3.8 Signed-off-by: Patrick McHardy <kaber@trash.net> Conflicts: include/linux/Kbuild include/linux/netlink.h
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c75
1 files changed, 58 insertions, 17 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index dab54099dd9..a68e91bcef3 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -785,6 +785,9 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
if (error)
goto out_rlist;
+ if (gfs2_rs_active(ip->i_res)) /* needs to be done with the rgrp glock held */
+ gfs2_rs_deltree(ip, ip->i_res);
+
error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE +
RES_INDIRECT + RES_STATFS + RES_QUOTA,
revokes);
@@ -988,6 +991,41 @@ unlock:
return err;
}
+/**
+ * gfs2_journaled_truncate - Wrapper for truncate_pagecache for jdata files
+ * @inode: The inode being truncated
+ * @oldsize: The original (larger) size
+ * @newsize: The new smaller size
+ *
+ * With jdata files, we have to journal a revoke for each block which is
+ * truncated. As a result, we need to split this into separate transactions
+ * if the number of pages being truncated gets too large.
+ */
+
+#define GFS2_JTRUNC_REVOKES 8192
+
+static int gfs2_journaled_truncate(struct inode *inode, u64 oldsize, u64 newsize)
+{
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ u64 max_chunk = GFS2_JTRUNC_REVOKES * sdp->sd_vfs->s_blocksize;
+ u64 chunk;
+ int error;
+
+ while (oldsize != newsize) {
+ chunk = oldsize - newsize;
+ if (chunk > max_chunk)
+ chunk = max_chunk;
+ truncate_pagecache(inode, oldsize, oldsize - chunk);
+ oldsize -= chunk;
+ gfs2_trans_end(sdp);
+ error = gfs2_trans_begin(sdp, RES_DINODE, GFS2_JTRUNC_REVOKES);
+ if (error)
+ return error;
+ }
+
+ return 0;
+}
+
static int trunc_start(struct inode *inode, u64 oldsize, u64 newsize)
{
struct gfs2_inode *ip = GFS2_I(inode);
@@ -997,8 +1035,10 @@ static int trunc_start(struct inode *inode, u64 oldsize, u64 newsize)
int journaled = gfs2_is_jdata(ip);
int error;
- error = gfs2_trans_begin(sdp,
- RES_DINODE + (journaled ? RES_JDATA : 0), 0);
+ if (journaled)
+ error = gfs2_trans_begin(sdp, RES_DINODE + RES_JDATA, GFS2_JTRUNC_REVOKES);
+ else
+ error = gfs2_trans_begin(sdp, RES_DINODE, 0);
if (error)
return error;
@@ -1023,7 +1063,16 @@ static int trunc_start(struct inode *inode, u64 oldsize, u64 newsize)
ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
gfs2_dinode_out(ip, dibh->b_data);
- truncate_pagecache(inode, oldsize, newsize);
+ if (journaled)
+ error = gfs2_journaled_truncate(inode, oldsize, newsize);
+ else
+ truncate_pagecache(inode, oldsize, newsize);
+
+ if (error) {
+ brelse(dibh);
+ return error;
+ }
+
out_brelse:
brelse(dibh);
out:
@@ -1045,12 +1094,13 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;
find_metapath(sdp, lblock, &mp, ip->i_height);
- if (!gfs2_qadata_get(ip))
- return -ENOMEM;
+ error = gfs2_rindex_update(sdp);
+ if (error)
+ return error;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
- goto out;
+ return error;
while (height--) {
struct strip_mine sm;
@@ -1064,8 +1114,6 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
gfs2_quota_unhold(ip);
-out:
- gfs2_qadata_put(ip);
return error;
}
@@ -1167,21 +1215,16 @@ static int do_grow(struct inode *inode, u64 size)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct buffer_head *dibh;
- struct gfs2_qadata *qa = NULL;
int error;
int unstuff = 0;
if (gfs2_is_stuffed(ip) &&
(size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) {
- qa = gfs2_qadata_get(ip);
- if (qa == NULL)
- return -ENOMEM;
-
error = gfs2_quota_lock_check(ip);
if (error)
- goto do_grow_alloc_put;
+ return error;
- error = gfs2_inplace_reserve(ip, 1);
+ error = gfs2_inplace_reserve(ip, 1, 0);
if (error)
goto do_grow_qunlock;
unstuff = 1;
@@ -1214,8 +1257,6 @@ do_grow_release:
gfs2_inplace_release(ip);
do_grow_qunlock:
gfs2_quota_unlock(ip);
-do_grow_alloc_put:
- gfs2_qadata_put(ip);
}
return error;
}