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ext4: fix documentation for ext4_ext_try_to_merge()

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Don't mention the nonexistent return value, and mention both types of
merges that are attempted.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20191231180444.46586-6-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Eric Biggers 2019-12-31 12:04:41 -06:00 committed by Theodore Ts'o
parent 43f816772f
commit adde81cfd5
1 changed files with 4 additions and 3 deletions
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7
fs/ext4/extents.c
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@ -1828,13 +1828,14 @@ static void ext4_ext_try_to_merge_up(handle_t *handle,
}
/*
* This function tries to merge the @ex extent to neighbours in the tree.
* return 1 if merge left else 0.
* This function tries to merge the @ex extent to neighbours in the tree, then
* tries to collapse the extent tree into the inode.
*/
static void ext4_ext_try_to_merge(handle_t *handle,
struct inode *inode,
struct ext4_ext_path *path,
struct ext4_extent *ex) {
struct ext4_extent *ex)
{
struct ext4_extent_header *eh;
unsigned int depth;
int merge_done = 0;