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authorSteven Whitehouse <steve@chygwyn.com>2012-05-28 15:26:56 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2012-06-06 11:27:36 +0100
commit23d0bb834e264f38335f19fe601564b8422431e7 (patch)
treeb6c93a163ef1e24cae77d4204c15206375e0d175 /fs/gfs2
parent5407e24229408d7586ee451a384fc13e4a2332be (diff)
downloadop-kernel-dev-23d0bb834e264f38335f19fe601564b8422431e7.zip
op-kernel-dev-23d0bb834e264f38335f19fe601564b8422431e7.tar.gz
GFS2: Add "top dir" flag support
This patch adds support for the "top dir" flag. Currently this is unused but a subsequent patch is planned which will add support for the Orlov allocation policy when allocating subdirectories in a parent with this flag set. In order to ensure backward compatible behaviour, mkfs.gfs2 does not currently tag the root directory with this flag, it must always be set manually. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/file.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 26e2905..6fbf3cb 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -142,6 +142,7 @@ static const u32 fsflags_to_gfs2[32] = {
[7] = GFS2_DIF_NOATIME,
[12] = GFS2_DIF_EXHASH,
[14] = GFS2_DIF_INHERIT_JDATA,
+ [17] = GFS2_DIF_TOPDIR,
};
static const u32 gfs2_to_fsflags[32] = {
@@ -150,6 +151,7 @@ static const u32 gfs2_to_fsflags[32] = {
[gfs2fl_AppendOnly] = FS_APPEND_FL,
[gfs2fl_NoAtime] = FS_NOATIME_FL,
[gfs2fl_ExHash] = FS_INDEX_FL,
+ [gfs2fl_TopLevel] = FS_TOPDIR_FL,
[gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL,
};
@@ -203,6 +205,7 @@ void gfs2_set_inode_flags(struct inode *inode)
GFS2_DIF_NOATIME| \
GFS2_DIF_SYNC| \
GFS2_DIF_SYSTEM| \
+ GFS2_DIF_TOPDIR| \
GFS2_DIF_INHERIT_JDATA)
/**
@@ -298,6 +301,7 @@ static int gfs2_set_flags(struct file *filp, u32 __user *ptr)
gfsflags = fsflags_cvt(fsflags_to_gfs2, fsflags);
if (!S_ISDIR(inode->i_mode)) {
+ gfsflags &= ~GFS2_DIF_TOPDIR;
if (gfsflags & GFS2_DIF_INHERIT_JDATA)
gfsflags ^= (GFS2_DIF_JDATA | GFS2_DIF_INHERIT_JDATA);
return do_gfs2_set_flags(filp, gfsflags, ~0);
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