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| author | Cesar Eduardo Barros <cesarb@cesarb.net> | 2011-03-22 16:33:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:07 -0700 |
| commit | 9b01c350af4fb00fe2ab66ff9bf16058c50b69bd (patch) | |
| tree | 246a4e93384acaca2ae91826448bfed5da08cb07 /mm/swapfile.c | |
| parent | f2090d2df51d7cdb2f952dcfdcd8baaac0aec444 (diff) | |
| download | lwn-9b01c350af4fb00fe2ab66ff9bf16058c50b69bd.tar.gz lwn-9b01c350af4fb00fe2ab66ff9bf16058c50b69bd.zip | |
sys_swapon: do only cleanup in the cleanup blocks
The only way error is 0 in the cleanup blocks is when the function is
returning successfully. In this case, the cleanup blocks were setting
S_SWAPFILE in the S_ISREG case. But this is not a cleanup.
Move the setting of S_SWAPFILE to just before the "goto out;" to make
this more clear. At this point, we do not need to test for inode because
it will never be NULL.
Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Tested-by: Eric B Munson <emunson@mgebm.net>
Acked-by: Eric B Munson <emunson@mgebm.net>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index a314d42c0fa5..e356e5e70313 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -2136,6 +2136,8 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) atomic_inc(&proc_poll_event); wake_up_interruptible(&proc_poll_wait); + if (S_ISREG(inode->i_mode)) + inode->i_flags |= S_SWAPFILE; error = 0; goto out; bad_swap: @@ -2163,11 +2165,8 @@ out: } if (name) putname(name); - if (inode && S_ISREG(inode->i_mode)) { - if (!error) - inode->i_flags |= S_SWAPFILE; + if (inode && S_ISREG(inode->i_mode)) mutex_unlock(&inode->i_mutex); - } return error; } |